38905867 has 16 divisors (see below), whose sum is σ = 52238592. Its totient is φ = 27983520.

The previous prime is 38905859. The next prime is 38905871. The reversal of 38905867 is 76850983.

It is a cyclic number.

It is not a de Polignac number, because 38905867 - 2³ = 38905859 is a prime.

It is not an unprimeable number, because it can be changed into a prime (38905847) 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, 18433 + ... + 20434.

It is an arithmetic number, because the mean of its divisors is an integer number (3264912).

Almost surely, 2^38905867 is an apocalyptic number.

38905867 is a deficient number, since it is larger than the sum of its proper divisors (13332725).

38905867 is a wasteful number, since it uses less digits than its factorization.

38905867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38898.

The product of its (nonzero) digits is 362880, while the sum is 46.

The square root of 38905867 is about 6237.4567733973. The cubic root of 38905867 is about 338.8480826895.

Subtracting 38905867 from its reverse (76850983), we obtain a triangular number (37945116 = T₈₇₁₁).

The spelling of 38905867 in words is "thirty-eight million, nine hundred five thousand, eight hundred sixty-seven".