113636989 has 2 divisors, whose sum is σ = 113636990. Its totient is φ = 113636988.

The previous prime is 113636977. The next prime is 113637037. The reversal of 113636989 is 989636311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 89302500 + 24334489 = 9450^2 + 4933^2 .

It is a cyclic number.

It is not a de Polignac number, because 113636989 - 2⁹ = 113636477 is a prime.

It is a super-2 number, since 2×113636989² = 25826730537972242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (113636909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56818494 + 56818495.

It is an arithmetic number, because the mean of its divisors is an integer number (56818495).

Almost surely, 2^113636989 is an apocalyptic number.

It is an amenable number.

113636989 is a deficient number, since it is larger than the sum of its proper divisors (1).

113636989 is an equidigital number, since it uses as much as digits as its factorization.

113636989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 209952, while the sum is 46.

The square root of 113636989 is about 10660.0651498947. The cubic root of 113636989 is about 484.3655415926.

The spelling of 113636989 in words is "one hundred thirteen million, six hundred thirty-six thousand, nine hundred eighty-nine".