72759149 has 4 divisors (see below), whose sum is σ = 74307264. Its totient is φ = 71211036.

The previous prime is 72759121. The next prime is 72759157. The reversal of 72759149 is 94195727.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72759149 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 (72759109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 773987 + ... + 774080.

It is an arithmetic number, because the mean of its divisors is an integer number (18576816).

Almost surely, 2^72759149 is an apocalyptic number.

It is an amenable number.

72759149 is a deficient number, since it is larger than the sum of its proper divisors (1548115).

72759149 is a wasteful number, since it uses less digits than its factorization.

72759149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1548114.

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

The square root of 72759149 is about 8529.8973616334. The cubic root of 72759149 is about 417.4737794139.

The spelling of 72759149 in words is "seventy-two million, seven hundred fifty-nine thousand, one hundred forty-nine".