72413739 has 6 divisors (see below), whose sum is σ = 104597636. Its totient is φ = 48275820.

The previous prime is 72413717. The next prime is 72413753. The reversal of 72413739 is 93731427.

It is not a de Polignac number, because 72413739 - 2⁷ = 72413611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72413839) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4022977 + ... + 4022994.

Almost surely, 2^72413739 is an apocalyptic number.

72413739 is a deficient number, since it is larger than the sum of its proper divisors (32183897).

72413739 is a wasteful number, since it uses less digits than its factorization.

72413739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8045977 (or 8045974 counting only the distinct ones).

The product of its digits is 31752, while the sum is 36.

The square root of 72413739 is about 8509.6262550126. The cubic root of 72413739 is about 416.8121058857.

The spelling of 72413739 in words is "seventy-two million, four hundred thirteen thousand, seven hundred thirty-nine".