872399537 has 2 divisors, whose sum is σ = 872399538. Its totient is φ = 872399536.

The previous prime is 872399531. The next prime is 872399543. The reversal of 872399537 is 735993278.

It is a balanced prime because it is at equal distance from previous prime (872399531) and next prime (872399543).

It can be written as a sum of positive squares in only one way, i.e., 619462321 + 252937216 = 24889^2 + 15904^2 .

It is a cyclic number.

It is not a de Polignac number, because 872399537 - 2¹⁴ = 872383153 is a prime.

It is a super-2 number, since 2×872399537² = 1522161904315628738, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (872399531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 436199768 + 436199769.

It is an arithmetic number, because the mean of its divisors is an integer number (436199769).

Almost surely, 2^872399537 is an apocalyptic number.

It is an amenable number.

872399537 is a deficient number, since it is larger than the sum of its proper divisors (1).

872399537 is an equidigital number, since it uses as much as digits as its factorization.

872399537 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2857680, while the sum is 53.

The square root of 872399537 is about 29536.4103607734. The cubic root of 872399537 is about 955.5171260675.

The spelling of 872399537 in words is "eight hundred seventy-two million, three hundred ninety-nine thousand, five hundred thirty-seven".