72394429 has 8 divisors (see below), whose sum is σ = 74067840. Its totient is φ = 70726656.

The previous prime is 72394391. The next prime is 72394463. The reversal of 72394429 is 92449327.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72394429 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72394391 and 72394400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72394489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35142 + ... + 37144.

It is an arithmetic number, because the mean of its divisors is an integer number (9258480).

Almost surely, 2^72394429 is an apocalyptic number.

It is an amenable number.

72394429 is a deficient number, since it is larger than the sum of its proper divisors (1673411).

72394429 is a wasteful number, since it uses less digits than its factorization.

72394429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2819.

The product of its digits is 108864, while the sum is 40.

The square root of 72394429 is about 8508.4915819433. The cubic root of 72394429 is about 416.7750532610.

The spelling of 72394429 in words is "seventy-two million, three hundred ninety-four thousand, four hundred twenty-nine".