72149759 has 6 divisors (see below), whose sum is σ = 79305240. Its totient is φ = 65590580.

The previous prime is 72149731. The next prime is 72149761. The reversal of 72149759 is 95794127.

It is not a de Polignac number, because 72149759 - 2⁸ = 72149503 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 (72149729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 298019 + ... + 298260.

It is an arithmetic number, because the mean of its divisors is an integer number (13217540).

Almost surely, 2^72149759 is an apocalyptic number.

72149759 is a deficient number, since it is larger than the sum of its proper divisors (7155481).

72149759 is a wasteful number, since it uses less digits than its factorization.

72149759 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 596301 (or 596290 counting only the distinct ones).

The product of its digits is 158760, while the sum is 44.

The square root of 72149759 is about 8494.1014239294. The cubic root of 72149759 is about 416.3050012241.

The spelling of 72149759 in words is "seventy-two million, one hundred forty-nine thousand, seven hundred fifty-nine".