38949507 has 6 divisors (see below), whose sum is σ = 56260412. Its totient is φ = 25966332.

The previous prime is 38949497. The next prime is 38949509. The reversal of 38949507 is 70594983.

It is not a de Polignac number, because 38949507 - 2²⁴ = 22172291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38949509) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2163853 + ... + 2163870.

Almost surely, 2^38949507 is an apocalyptic number.

38949507 is a deficient number, since it is larger than the sum of its proper divisors (17310905).

38949507 is a wasteful number, since it uses less digits than its factorization.

38949507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4327729 (or 4327726 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The square root of 38949507 is about 6240.9540136104. The cubic root of 38949507 is about 338.9747285832.

The spelling of 38949507 in words is "thirty-eight million, nine hundred forty-nine thousand, five hundred seven".