74457479 has 2 divisors, whose sum is σ = 74457480. Its totient is φ = 74457478.

The previous prime is 74457437. The next prime is 74457563. The reversal of 74457479 is 97475447.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 74457479 - 2¹² = 74453383 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74450479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37228739 + 37228740.

It is an arithmetic number, because the mean of its divisors is an integer number (37228740).

Almost surely, 2^74457479 is an apocalyptic number.

74457479 is a deficient number, since it is larger than the sum of its proper divisors (1).

74457479 is an equidigital number, since it uses as much as digits as its factorization.

74457479 is an evil number, because the sum of its binary digits is even.

The product of its digits is 987840, while the sum is 47.

The square root of 74457479 is about 8628.8747238559. The cubic root of 74457479 is about 420.6970266350.

The spelling of 74457479 in words is "seventy-four million, four hundred fifty-seven thousand, four hundred seventy-nine".