73412639 has 2 divisors, whose sum is σ = 73412640. Its totient is φ = 73412638.

The previous prime is 73412627. The next prime is 73412657. The reversal of 73412639 is 93621437.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73412639 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 73412599 and 73412608.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73412609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36706319 + 36706320.

It is an arithmetic number, because the mean of its divisors is an integer number (36706320).

Almost surely, 2^73412639 is an apocalyptic number.

73412639 is a deficient number, since it is larger than the sum of its proper divisors (1).

73412639 is an equidigital number, since it uses as much as digits as its factorization.

73412639 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27216, while the sum is 35.

The square root of 73412639 is about 8568.1175878953. The cubic root of 73412639 is about 418.7199100975.

The spelling of 73412639 in words is "seventy-three million, four hundred twelve thousand, six hundred thirty-nine".