74232399 has 8 divisors (see below), whose sum is σ = 99334960. Its totient is φ = 49309056.

The previous prime is 74232391. The next prime is 74232407. The reversal of 74232399 is 99323247.

It is an interprime number because it is at equal distance from previous prime (74232391) and next prime (74232407).

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

It is not a de Polignac number, because 74232399 - 2³ = 74232391 is a prime.

It is a super-2 number, since 2×74232399² = 11020898122590402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74232391) 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, 43834 + ... + 45495.

It is an arithmetic number, because the mean of its divisors is an integer number (12416870).

Almost surely, 2^74232399 is an apocalyptic number.

74232399 is a deficient number, since it is larger than the sum of its proper divisors (25102561).

74232399 is a wasteful number, since it uses less digits than its factorization.

74232399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89609.

The product of its digits is 81648, while the sum is 39.

The square root of 74232399 is about 8615.8225956666. The cubic root of 74232399 is about 420.2726857318.

The spelling of 74232399 in words is "seventy-four million, two hundred thirty-two thousand, three hundred ninety-nine".