872004457 has 2 divisors, whose sum is σ = 872004458. Its totient is φ = 872004456.

The previous prime is 872004437. The next prime is 872004499. The reversal of 872004457 is 754400278.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 650709081 + 221295376 = 25509^2 + 14876^2 .

It is a cyclic number.

It is not a de Polignac number, because 872004457 - 2¹¹ = 872002409 is a prime.

It is not a weakly prime, because it can be changed into another prime (872004437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 436002228 + 436002229.

It is an arithmetic number, because the mean of its divisors is an integer number (436002229).

Almost surely, 2^872004457 is an apocalyptic number.

It is an amenable number.

872004457 is a deficient number, since it is larger than the sum of its proper divisors (1).

872004457 is an equidigital number, since it uses as much as digits as its factorization.

872004457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62720, while the sum is 37.

The square root of 872004457 is about 29529.7215869029. The cubic root of 872004457 is about 955.3728639143.

The spelling of 872004457 in words is "eight hundred seventy-two million, four thousand, four hundred fifty-seven".