400097529257 has 4 divisors (see below), whose sum is σ = 400250182596. Its totient is φ = 399944875920.

The previous prime is 400097529253. The next prime is 400097529263. The reversal of 400097529257 is 752925790004.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 291793352041 + 108304177216 = 540179^2 + 329096^2 .

It is a cyclic number.

It is not a de Polignac number, because 400097529257 - 2² = 400097529253 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400097529253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76322738 + ... + 76327979.

It is an arithmetic number, because the mean of its divisors is an integer number (100062545649).

Almost surely, 2^400097529257 is an apocalyptic number.

It is an amenable number.

400097529257 is a deficient number, since it is larger than the sum of its proper divisors (152653339).

400097529257 is a wasteful number, since it uses less digits than its factorization.

400097529257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152653338.

The product of its (nonzero) digits is 1587600, while the sum is 50.

The spelling of 400097529257 in words is "four hundred billion, ninety-seven million, five hundred twenty-nine thousand, two hundred fifty-seven".