43920113 has 2 divisors, whose sum is σ = 43920114. Its totient is φ = 43920112.

The previous prime is 43920101. The next prime is 43920119. The reversal of 43920113 is 31102934.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43784689 + 135424 = 6617^2 + 368^2 .

It is a cyclic number.

It is not a de Polignac number, because 43920113 - 2²⁰ = 42871537 is a prime.

It is not a weakly prime, because it can be changed into another prime (43920119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21960056 + 21960057.

It is an arithmetic number, because the mean of its divisors is an integer number (21960057).

Almost surely, 2^43920113 is an apocalyptic number.

It is an amenable number.

43920113 is a deficient number, since it is larger than the sum of its proper divisors (1).

43920113 is an equidigital number, since it uses as much as digits as its factorization.

43920113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 43920113 is about 6627.2251357563. The cubic root of 43920113 is about 352.8210458091.

The spelling of 43920113 in words is "forty-three million, nine hundred twenty thousand, one hundred thirteen".