807423957 has 10 divisors (see below), whose sum is σ = 1206151958. Its totient is φ = 538282584.

The previous prime is 807423949. The next prime is 807423961. The reversal of 807423957 is 759324708.

It can be written as a sum of positive squares in only one way, i.e., 406062801 + 401361156 = 20151^2 + 20034^2 .

It is not a de Polignac number, because 807423957 - 2³ = 807423949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (807423907) 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 9 ways as a sum of consecutive naturals, for example, 4984018 + ... + 4984179.

Almost surely, 2^807423957 is an apocalyptic number.

It is an amenable number.

807423957 is a deficient number, since it is larger than the sum of its proper divisors (398728001).

807423957 is an equidigital number, since it uses as much as digits as its factorization.

807423957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9968209 (or 9968200 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 45.

The square root of 807423957 is about 28415.2064395105. The cubic root of 807423957 is about 931.1805091939.

The spelling of 807423957 in words is "eight hundred seven million, four hundred twenty-three thousand, nine hundred fifty-seven".