74539949 has 8 divisors (see below), whose sum is σ = 81805248. Its totient is φ = 67356160.

The previous prime is 74539943. The next prime is 74539957. The reversal of 74539949 is 94993547.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 74539949 - 2⁸ = 74539693 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 74539897 and 74539906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74539943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18452 + ... + 22125.

It is an arithmetic number, because the mean of its divisors is an integer number (10225656).

Almost surely, 2^74539949 is an apocalyptic number.

It is an amenable number.

74539949 is a deficient number, since it is larger than the sum of its proper divisors (7265299).

74539949 is a wasteful number, since it uses less digits than its factorization.

74539949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40755.

The product of its digits is 1224720, while the sum is 50.

The square root of 74539949 is about 8633.6521241014. The cubic root of 74539949 is about 420.8522923546.

The spelling of 74539949 in words is "seventy-four million, five hundred thirty-nine thousand, nine hundred forty-nine".