804356957 has 2 divisors, whose sum is σ = 804356958. Its totient is φ = 804356956.

The previous prime is 804356953. The next prime is 804357053. The reversal of 804356957 is 759653408.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 576528121 + 227828836 = 24011^2 + 15094^2 .

It is a cyclic number.

It is not a de Polignac number, because 804356957 - 2² = 804356953 is a prime.

It is a super-2 number, since 2×804356957² = 1293980228548599698, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (804356951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 402178478 + 402178479.

It is an arithmetic number, because the mean of its divisors is an integer number (402178479).

Almost surely, 2^804356957 is an apocalyptic number.

It is an amenable number.

804356957 is a deficient number, since it is larger than the sum of its proper divisors (1).

804356957 is an equidigital number, since it uses as much as digits as its factorization.

804356957 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 907200, while the sum is 47.

The square root of 804356957 is about 28361.1875103988. The cubic root of 804356957 is about 929.9999834278. Note that the first 4 decimals are identical.

The spelling of 804356957 in words is "eight hundred four million, three hundred fifty-six thousand, nine hundred fifty-seven".