72430399 has 8 divisors (see below), whose sum is σ = 73081008. Its totient is φ = 71783040.

The previous prime is 72430357. The next prime is 72430403. The reversal of 72430399 is 99303427.

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

It is a cyclic number.

It is not a de Polignac number, because 72430399 - 2⁷ = 72430271 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 (72430499) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65844 + ... + 66934.

It is an arithmetic number, because the mean of its divisors is an integer number (9135126).

Almost surely, 2^72430399 is an apocalyptic number.

72430399 is a deficient number, since it is larger than the sum of its proper divisors (650609).

72430399 is a wasteful number, since it uses less digits than its factorization.

72430399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1625.

The product of its (nonzero) digits is 40824, while the sum is 37.

The square root of 72430399 is about 8510.6050901214. The cubic root of 72430399 is about 416.8440683158.

The spelling of 72430399 in words is "seventy-two million, four hundred thirty thousand, three hundred ninety-nine".