72714139 has 4 divisors (see below), whose sum is σ = 74679424. Its totient is φ = 70748856.

The previous prime is 72714113. The next prime is 72714143. The reversal of 72714139 is 93141727.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93141727 = 7 ⋅13305961.

It is a cyclic number.

It is not a de Polignac number, because 72714139 - 2¹³ = 72705947 is a prime.

It is a super-2 number, since 2×72714139² = 10574692021022642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72714179) 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, 982587 + ... + 982660.

It is an arithmetic number, because the mean of its divisors is an integer number (18669856).

Almost surely, 2^72714139 is an apocalyptic number.

72714139 is a deficient number, since it is larger than the sum of its proper divisors (1965285).

72714139 is a wasteful number, since it uses less digits than its factorization.

72714139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1965284.

The product of its digits is 10584, while the sum is 34.

The square root of 72714139 is about 8527.2585864391. The cubic root of 72714139 is about 417.3876762864.

The spelling of 72714139 in words is "seventy-two million, seven hundred fourteen thousand, one hundred thirty-nine".