872469457 has 2 divisors, whose sum is σ = 872469458. Its totient is φ = 872469456.

The previous prime is 872469407. The next prime is 872469469. The reversal of 872469457 is 754964278.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 848498641 + 23970816 = 29129^2 + 4896^2 .

It is a cyclic number.

It is not a de Polignac number, because 872469457 - 2²⁷ = 738251729 is a prime.

It is a super-2 number, since 2×872469457² = 1522405906795749698, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (872469407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 436234728 + 436234729.

It is an arithmetic number, because the mean of its divisors is an integer number (436234729).

Almost surely, 2^872469457 is an apocalyptic number.

It is an amenable number.

872469457 is a deficient number, since it is larger than the sum of its proper divisors (1).

872469457 is an equidigital number, since it uses as much as digits as its factorization.

872469457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3386880, while the sum is 52.

The square root of 872469457 is about 29537.5939609170. The cubic root of 872469457 is about 955.5426525875.

The spelling of 872469457 in words is "eight hundred seventy-two million, four hundred sixty-nine thousand, four hundred fifty-seven".