74399297 has 24 divisors (see below), whose sum is σ = 91785960. Its totient is φ = 60023040.

The previous prime is 74399257. The next prime is 74399309. The reversal of 74399297 is 79299347.

It can be written as a sum of positive squares in 4 ways, for example, as 3013696 + 71385601 = 1736^2 + 8449^2 .

It is a de Polignac number, because none of the positive numbers 2^k-74399297 is a prime.

It is not an unprimeable number, because it can be changed into a prime (74399207) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 57623 + ... + 58899.

It is an arithmetic number, because the mean of its divisors is an integer number (3824415).

Almost surely, 2^74399297 is an apocalyptic number.

It is an amenable number.

74399297 is a deficient number, since it is larger than the sum of its proper divisors (17386663).

74399297 is a wasteful number, since it uses less digits than its factorization.

74399297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1361 (or 1354 counting only the distinct ones).

The product of its digits is 857304, while the sum is 50.

The square root of 74399297 is about 8625.5027099874. The cubic root of 74399297 is about 420.5874187843.

Adding to 74399297 its sum of digits (50), we get a palindrome (74399347).

The spelling of 74399297 in words is "seventy-four million, three hundred ninety-nine thousand, two hundred ninety-seven".