72914709 has 16 divisors (see below), whose sum is σ = 112517120. Its totient is φ = 41137200.

The previous prime is 72914707. The next prime is 72914711. The reversal of 72914709 is 90741927.

It is an interprime number because it is at equal distance from previous prime (72914707) and next prime (72914711).

It is not a de Polignac number, because 72914709 - 2¹ = 72914707 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72914707) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20317 + ... + 23634.

It is an arithmetic number, because the mean of its divisors is an integer number (7032320).

Almost surely, 2^72914709 is an apocalyptic number.

72914709 is a gapful number since it is divisible by the number (79) formed by its first and last digit.

It is an amenable number.

72914709 is a deficient number, since it is larger than the sum of its proper divisors (39602411).

72914709 is a wasteful number, since it uses less digits than its factorization.

72914709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44040.

The product of its (nonzero) digits is 31752, while the sum is 39.

The square root of 72914709 is about 8539.0110083077. The cubic root of 72914709 is about 417.7710890741.

The spelling of 72914709 in words is "seventy-two million, nine hundred fourteen thousand, seven hundred nine".