139924994 has 32 divisors (see below), whose sum is σ = 244083456. Its totient is φ = 59454720.

The previous prime is 139924957. The next prime is 139924997. The reversal of 139924994 is 499429931.

It is not an unprimeable number, because it can be changed into a prime (139924997) 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, 57527 + ... + 59909.

It is an arithmetic number, because the mean of its divisors is an integer number (7627608).

Almost surely, 2^139924994 is an apocalyptic number.

139924994 is a deficient number, since it is larger than the sum of its proper divisors (104158462).

139924994 is a wasteful number, since it uses less digits than its factorization.

139924994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2570.

The product of its digits is 629856, while the sum is 50.

The square root of 139924994 is about 11828.9895595524. The cubic root of 139924994 is about 519.1566630930.

The spelling of 139924994 in words is "one hundred thirty-nine million, nine hundred twenty-four thousand, nine hundred ninety-four".