74009939814 has 24 divisors (see below), whose sum is σ = 164470975560. Its totient is φ = 24669313560.

The previous prime is 74009939767. The next prime is 74009939819. The reversal of 74009939814 is 41893990047.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74009939819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1980624 + ... + 2017644.

It is an arithmetic number, because the mean of its divisors is an integer number (6852957315).

Almost surely, 2^74009939814 is an apocalyptic number.

74009939814 is an abundant number, since it is smaller than the sum of its proper divisors (90461035746).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

74009939814 is an frugal number, since it uses more digits than its factorization.

74009939814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74053 (or 37026 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 54.

Multiplying 74009939814 by its sum of digits (54), we get a square (3996536749956 = 1999134²).

74009939814 divided by its sum of digits (54) gives a square (1370554441 = 37021²).

The spelling of 74009939814 in words is "seventy-four billion, nine million, nine hundred thirty-nine thousand, eight hundred fourteen".