72438849 has 48 divisors (see below), whose sum is σ = 127753600. Its totient is φ = 38631168.

The previous prime is 72438809. The next prime is 72438857. The reversal of 72438849 is 94883427.

It is not a de Polignac number, because 72438849 - 2⁷ = 72438721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72438809) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 86967 + ... + 87795.

Almost surely, 2^72438849 is an apocalyptic number.

It is an amenable number.

72438849 is a deficient number, since it is larger than the sum of its proper divisors (55314751).

72438849 is a wasteful number, since it uses less digits than its factorization.

72438849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 934 (or 931 counting only the distinct ones).

The product of its digits is 387072, while the sum is 45.

The square root of 72438849 is about 8511.1015150802. The cubic root of 72438849 is about 416.8602778791.

The spelling of 72438849 in words is "seventy-two million, four hundred thirty-eight thousand, eight hundred forty-nine".