38465921 has 6 divisors (see below), whose sum is σ = 41652630. Its totient is φ = 35506848.

The previous prime is 38465893. The next prime is 38465941. The reversal of 38465921 is 12956483.

38465921 = T₂₉₈ + T₂₉₉ + ... + T₆₃₅.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 25921 + 38440000 = 161^2 + 6200^2 .

It is not a de Polignac number, because 38465921 - 2⁶ = 38465857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38465941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 113636 + ... + 113973.

It is an arithmetic number, because the mean of its divisors is an integer number (6942105).

Almost surely, 2^38465921 is an apocalyptic number.

It is an amenable number.

38465921 is a deficient number, since it is larger than the sum of its proper divisors (3186709).

38465921 is a wasteful number, since it uses less digits than its factorization.

38465921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227635 (or 227622 counting only the distinct ones).

The product of its digits is 51840, while the sum is 38.

The square root of 38465921 is about 6202.0900509425. The cubic root of 38465921 is about 337.5660110479.

The spelling of 38465921 in words is "thirty-eight million, four hundred sixty-five thousand, nine hundred twenty-one".