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388384097 = 2511547347
BaseRepresentation
bin10111001001100…
…100010101100001
31000001210221211012
4113021210111201
51243411242342
6102312230305
712424132103
oct2711442541
91001727735
10388384097
1118a2617a2
12aa09b395
136260539a
143981d573
152416bb82
hex17264561

388384097 has 4 divisors (see below), whose sum is σ = 389931696. Its totient is φ = 386836500.

The previous prime is 388384069. The next prime is 388384109. The reversal of 388384097 is 790483883.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-388384097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (388384897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 773423 + ... + 773924.

It is an arithmetic number, because the mean of its divisors is an integer number (97482924).

Almost surely, 2388384097 is an apocalyptic number.

It is an amenable number.

388384097 is a deficient number, since it is larger than the sum of its proper divisors (1547599).

388384097 is a wasteful number, since it uses less digits than its factorization.

388384097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1547598.

The product of its (nonzero) digits is 1161216, while the sum is 50.

The square root of 388384097 is about 19707.4629772581. The cubic root of 388384097 is about 729.6038990805.

The spelling of 388384097 in words is "three hundred eighty-eight million, three hundred eighty-four thousand, ninety-seven".

Divisors: 1 251 1547347 388384097