38977491 has 16 divisors (see below), whose sum is σ = 60608000. Its totient is φ = 22272264.

The previous prime is 38977483. The next prime is 38977513. The reversal of 38977491 is 19477983.

It is not a de Polignac number, because 38977491 - 2³ = 38977483 is a prime.

It is a super-3 number, since 3×38977491³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 38977491.

It is not an unprimeable number, because it can be changed into a prime (38977091) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17911 + ... + 19968.

It is an arithmetic number, because the mean of its divisors is an integer number (3788000).

Almost surely, 2^38977491 is an apocalyptic number.

38977491 is a deficient number, since it is larger than the sum of its proper divisors (21630509).

38977491 is an equidigital number, since it uses as much as digits as its factorization.

38977491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37903 (or 37889 counting only the distinct ones).

The product of its digits is 381024, while the sum is 48.

The square root of 38977491 is about 6243.1955759851. The cubic root of 38977491 is about 339.0558900550.

The spelling of 38977491 in words is "thirty-eight million, nine hundred seventy-seven thousand, four hundred ninety-one".