139912992 has 162 divisors, whose sum is σ = 433219059. Its totient is φ = 42823680.

The previous prime is 139912973. The next prime is 139912999. The reversal of 139912992 is 299219931.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 5 ways, for example, as 34152336 + 105760656 = 5844^2 + 10284^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=8364.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (139912999) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 3412492 + ... + 3412532.

Almost surely, 2^139912992 is an apocalyptic number.

139912992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 139912992

139912992 is an abundant number, since it is smaller than the sum of its proper divisors (293306067).

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

139912992 is a wasteful number, since it uses less digits than its factorization.

139912992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132 (or 63 counting only the distinct ones).

The product of its digits is 78732, while the sum is 45.

The square root of 139912992 is about 11828.4822356886. The cubic root of 139912992 is about 519.1418191964.

The spelling of 139912992 in words is "one hundred thirty-nine million, nine hundred twelve thousand, nine hundred ninety-two".