74039481 has 16 divisors (see below), whose sum is σ = 112365120. Its totient is φ = 48155040.

The previous prime is 74039477. The next prime is 74039491. The reversal of 74039481 is 18493047.

It is a happy number.

It is not a de Polignac number, because 74039481 - 2² = 74039477 is a prime.

It is a super-2 number, since 2×74039481² = 10963689493498722, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (74039401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32335 + ... + 34548.

It is an arithmetic number, because the mean of its divisors is an integer number (7022820).

Almost surely, 2^74039481 is an apocalyptic number.

It is an amenable number.

74039481 is a deficient number, since it is larger than the sum of its proper divisors (38325639).

74039481 is a wasteful number, since it uses less digits than its factorization.

74039481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66933 (or 66927 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 74039481 is about 8604.6197475542. The cubic root of 74039481 is about 419.9082963052.

The spelling of 74039481 in words is "seventy-four million, thirty-nine thousand, four hundred eighty-one".