38521949 has 12 divisors (see below), whose sum is σ = 43054524. Its totient is φ = 34342272.

The previous prime is 38521943. The next prime is 38521957. The reversal of 38521949 is 94912583.

It can be written as a sum of positive squares in 2 ways, for example, as 34692100 + 3829849 = 5890^2 + 1957^2 .

It is a de Polignac number, because none of the positive numbers 2^k-38521949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38521943) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2999 + ... + 9275.

It is an arithmetic number, because the mean of its divisors is an integer number (3587877).

Almost surely, 2^38521949 is an apocalyptic number.

It is an amenable number.

38521949 is a deficient number, since it is larger than the sum of its proper divisors (4532575).

38521949 is a wasteful number, since it uses less digits than its factorization.

38521949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6332 (or 6313 counting only the distinct ones).

The product of its digits is 77760, while the sum is 41.

The square root of 38521949 is about 6206.6052718052. The cubic root of 38521949 is about 337.7298268159.

The spelling of 38521949 in words is "thirty-eight million, five hundred twenty-one thousand, nine hundred forty-nine".