11938997 has 12 divisors (see below), whose sum is σ = 13980960. Its totient is φ = 10165176.

The previous prime is 11938991. The next prime is 11939003. The reversal of 11938997 is 79983911.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (11938991) and next prime (11939003).

It is not a de Polignac number, because 11938997 - 2⁶ = 11938933 is a prime.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11938991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7454 + ... + 8912.

It is an arithmetic number, because the mean of its divisors is an integer number (1165080).

Almost surely, 2^11938997 is an apocalyptic number.

It is an amenable number.

11938997 is a deficient number, since it is larger than the sum of its proper divisors (2041963).

11938997 is a wasteful number, since it uses less digits than its factorization.

11938997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1640 (or 1633 counting only the distinct ones).

The product of its digits is 122472, while the sum is 47.

The square root of 11938997 is about 3455.2853717168. The cubic root of 11938997 is about 228.5542392393.

The spelling of 11938997 in words is "eleven million, nine hundred thirty-eight thousand, nine hundred ninety-seven".