74399453 has 2 divisors, whose sum is σ = 74399454. Its totient is φ = 74399452.

The previous prime is 74399447. The next prime is 74399491. The reversal of 74399453 is 35499347.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58415449 + 15984004 = 7643^2 + 3998^2 .

It is a cyclic number.

It is not a de Polignac number, because 74399453 - 2¹² = 74395357 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74399653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37199726 + 37199727.

It is an arithmetic number, because the mean of its divisors is an integer number (37199727).

Almost surely, 2^74399453 is an apocalyptic number.

It is an amenable number.

74399453 is a deficient number, since it is larger than the sum of its proper divisors (1).

74399453 is an equidigital number, since it uses as much as digits as its factorization.

74399453 is an evil number, because the sum of its binary digits is even.

The product of its digits is 408240, while the sum is 44.

The square root of 74399453 is about 8625.5117529339. The cubic root of 74399453 is about 420.5877127458.

The spelling of 74399453 in words is "seventy-four million, three hundred ninety-nine thousand, four hundred fifty-three".