9864624457 has 2 divisors, whose sum is σ = 9864624458. Its totient is φ = 9864624456.

The previous prime is 9864624443. The next prime is 9864624463. The reversal of 9864624457 is 7544264689.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9811100601 + 53523856 = 99051^2 + 7316^2 .

It is a cyclic number.

It is not a de Polignac number, because 9864624457 - 2²³ = 9856235849 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9864624398 and 9864624407.

It is not a weakly prime, because it can be changed into another prime (9864624437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4932312228 + 4932312229.

It is an arithmetic number, because the mean of its divisors is an integer number (4932312229).

Almost surely, 2^9864624457 is an apocalyptic number.

It is an amenable number.

9864624457 is a deficient number, since it is larger than the sum of its proper divisors (1).

9864624457 is an equidigital number, since it uses as much as digits as its factorization.

9864624457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11612160, while the sum is 55.

The square root of 9864624457 is about 99320.8158293114. The cubic root of 9864624457 is about 2144.6685611823.

The spelling of 9864624457 in words is "nine billion, eight hundred sixty-four million, six hundred twenty-four thousand, four hundred fifty-seven".