74977949 has 4 divisors (see below), whose sum is σ = 75176160. Its totient is φ = 74779740.

The previous prime is 74977943. The next prime is 74977979. The reversal of 74977949 is 94977947.

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, and also an emirpimes, since its reverse is a distinct semiprime: 94977947 = 1571 ⋅60457.

It is a cyclic number.

It is not a de Polignac number, because 74977949 - 2¹⁶ = 74912413 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 74977894 and 74977903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74977943) 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, 98537 + ... + 99294.

It is an arithmetic number, because the mean of its divisors is an integer number (18794040).

Almost surely, 2^74977949 is an apocalyptic number.

It is an amenable number.

74977949 is a deficient number, since it is larger than the sum of its proper divisors (198211).

74977949 is a wasteful number, since it uses less digits than its factorization.

74977949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198210.

The product of its digits is 4000752, while the sum is 56.

The square root of 74977949 is about 8658.9808291738. The cubic root of 74977949 is about 421.6749985248.

The spelling of 74977949 in words is "seventy-four million, nine hundred seventy-seven thousand, nine hundred forty-nine".