72375439 has 4 divisors (see below), whose sum is σ = 72754560. Its totient is φ = 71996320.

The previous prime is 72375403. The next prime is 72375449. The reversal of 72375439 is 93457327.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93457327 = 41 ⋅2279447.

It is a cyclic number.

It is not a de Polignac number, because 72375439 - 2⁷ = 72375311 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 (72375449) 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, 189274 + ... + 189655.

It is an arithmetic number, because the mean of its divisors is an integer number (18188640).

Almost surely, 2^72375439 is an apocalyptic number.

72375439 is a deficient number, since it is larger than the sum of its proper divisors (379121).

72375439 is a wasteful number, since it uses less digits than its factorization.

72375439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379120.

The product of its digits is 158760, while the sum is 40.

The square root of 72375439 is about 8507.3755647673. The cubic root of 72375439 is about 416.7386082356.

The spelling of 72375439 in words is "seventy-two million, three hundred seventy-five thousand, four hundred thirty-nine".