38464921 has 4 divisors (see below), whose sum is σ = 41961744. Its totient is φ = 34968100.

The previous prime is 38464891. The next prime is 38464957. The reversal of 38464921 is 12946483.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38464921 is a prime.

It is not an unprimeable number, because it can be changed into a prime (38464961) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1748395 + ... + 1748416.

It is an arithmetic number, because the mean of its divisors is an integer number (10490436).

Almost surely, 2^38464921 is an apocalyptic number.

It is an amenable number.

38464921 is a deficient number, since it is larger than the sum of its proper divisors (3496823).

38464921 is a wasteful number, since it uses less digits than its factorization.

38464921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3496822.

The product of its digits is 41472, while the sum is 37.

The square root of 38464921 is about 6202.0094324340. The cubic root of 38464921 is about 337.5630857838.

The spelling of 38464921 in words is "thirty-eight million, four hundred sixty-four thousand, nine hundred twenty-one".