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997739001 = 32719907919
BaseRepresentation
bin111011011110000…
…100100111111001
32120112102101121100
4323132010213321
54020410122001
6243001002013
733503433030
oct7336044771
92515371540
10997739001
1147221a096
1223a183309
1312b92800c
149671d717
155c8d6586
hex3b7849f9

997739001 has 48 divisors (see below), whose sum is σ = 1737548800. Its totient is φ = 538946784.

The previous prime is 997738991. The next prime is 997739033. The reversal of 997739001 is 100937799.

It is not a de Polignac number, because 997739001 - 210 = 997737977 is a prime.

It is a super-2 number, since 2×9977390012 = 1990966228232956002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (997739201) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1085220 + ... + 1086138.

Almost surely, 2997739001 is an apocalyptic number.

It is an amenable number.

997739001 is a deficient number, since it is larger than the sum of its proper divisors (739809799).

997739001 is a wasteful number, since it uses less digits than its factorization.

997739001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1858 (or 1855 counting only the distinct ones).

The product of its (nonzero) digits is 107163, while the sum is 45.

The square root of 997739001 is about 31587.0068382555. The cubic root of 997739001 is about 999.2457649392.

The spelling of 997739001 in words is "nine hundred ninety-seven million, seven hundred thirty-nine thousand, one".

Divisors: 1 3 7 9 19 21 57 63 133 171 399 907 919 1197 2721 2757 6349 6433 8163 8271 17233 17461 19047 19299 51699 52383 57141 57897 120631 122227 155097 157149 361893 366681 833533 1085679 1100043 2500599 5834731 7501797 15837127 17504193 47511381 52512579 110859889 142534143 332579667 997739001