74857449 has 4 divisors (see below), whose sum is σ = 99809936. Its totient is φ = 49904964.

The previous prime is 74857441. The next prime is 74857457. The reversal of 74857449 is 94475847.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (74857441) and next prime (74857457).

It is not a de Polignac number, because 74857449 - 2³ = 74857441 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 74857398 and 74857407.

It is not an unprimeable number, because it can be changed into a prime (74857441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12476239 + ... + 12476244.

It is an arithmetic number, because the mean of its divisors is an integer number (24952484).

Almost surely, 2^74857449 is an apocalyptic number.

It is an amenable number.

74857449 is a deficient number, since it is larger than the sum of its proper divisors (24952487).

74857449 is a wasteful number, since it uses less digits than its factorization.

74857449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24952486.

The product of its digits is 1128960, while the sum is 48.

The square root of 74857449 is about 8652.0199375637. The cubic root of 74857449 is about 421.4489805960.

The spelling of 74857449 in words is "seventy-four million, eight hundred fifty-seven thousand, four hundred forty-nine".