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7999497 = 321180803
BaseRepresentation
bin11110100001000000001001
3120001102020200
4132201000021
54021440442
6443242413
7124665102
oct36410011
916042220
107999497
114574160
122819409
13187113c
1410c33a9
15a8034c
hex7a1009

7999497 has 12 divisors (see below), whose sum is σ = 12605424. Its totient is φ = 4848120.

The previous prime is 7999487. The next prime is 7999501. The reversal of 7999497 is 7949997.

It is not a de Polignac number, because 7999497 - 28 = 7999241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7999417) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40303 + ... + 40500.

It is an arithmetic number, because the mean of its divisors is an integer number (1050452).

Almost surely, 27999497 is an apocalyptic number.

It is an amenable number.

7999497 is a deficient number, since it is larger than the sum of its proper divisors (4605927).

7999497 is a wasteful number, since it uses less digits than its factorization.

7999497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80820 (or 80817 counting only the distinct ones).

The product of its digits is 1285956, while the sum is 54.

The square root of 7999497 is about 2828.3382046707. The cubic root of 7999497 is about 199.9958082455.

It can be divided in two parts, 799 and 9497, that added together give a triangular number (10296 = T143).

The spelling of 7999497 in words is "seven million, nine hundred ninety-nine thousand, four hundred ninety-seven".

Divisors: 1 3 9 11 33 99 80803 242409 727227 888833 2666499 7999497