74915849 has 4 divisors (see below), whose sum is σ = 76034064. Its totient is φ = 73797636.

The previous prime is 74915843. The next prime is 74915873. The reversal of 74915849 is 94851947.

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: 94851947 = 673 ⋅140939.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74915849 is a prime.

It is a super-2 number, since 2×74915849² = 11224768862781602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74915843) 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, 559007 + ... + 559140.

It is an arithmetic number, because the mean of its divisors is an integer number (19008516).

Almost surely, 2^74915849 is an apocalyptic number.

It is an amenable number.

74915849 is a deficient number, since it is larger than the sum of its proper divisors (1118215).

74915849 is a wasteful number, since it uses less digits than its factorization.

74915849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1118214.

The product of its digits is 362880, while the sum is 47.

The square root of 74915849 is about 8655.3942140147. The cubic root of 74915849 is about 421.5585498420.

The spelling of 74915849 in words is "seventy-four million, nine hundred fifteen thousand, eight hundred forty-nine".