113938621 has 2 divisors, whose sum is σ = 113938622. Its totient is φ = 113938620.

The previous prime is 113938613. The next prime is 113938633. The reversal of 113938621 is 126839311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 113103225 + 835396 = 10635^2 + 914^2 .

It is an emirp because it is prime and its reverse (126839311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 113938621 - 2³ = 113938613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (113938921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56969310 + 56969311.

It is an arithmetic number, because the mean of its divisors is an integer number (56969311).

Almost surely, 2^113938621 is an apocalyptic number.

It is an amenable number.

113938621 is a deficient number, since it is larger than the sum of its proper divisors (1).

113938621 is an equidigital number, since it uses as much as digits as its factorization.

113938621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7776, while the sum is 34.

The square root of 113938621 is about 10674.2035300063. The cubic root of 113938621 is about 484.7937210431.

The spelling of 113938621 in words is "one hundred thirteen million, nine hundred thirty-eight thousand, six hundred twenty-one".