139486992 has 40 divisors (see below), whose sum is σ = 366256320. Its totient is φ = 45732480.

The previous prime is 139486981. The next prime is 139486993. The reversal of 139486992 is 299684931.

It is not an unprimeable number, because it can be changed into a prime (139486993) 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, 20892 + ... + 26747.

It is an arithmetic number, because the mean of its divisors is an integer number (9156408).

Almost surely, 2^139486992 is an apocalyptic number.

139486992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

139486992 is an abundant number, since it is smaller than the sum of its proper divisors (226769328).

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

139486992 is a wasteful number, since it uses less digits than its factorization.

139486992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47711 (or 47705 counting only the distinct ones).

The product of its digits is 839808, while the sum is 51.

The square root of 139486992 is about 11810.4611256293. The cubic root of 139486992 is about 518.6143979624.

The spelling of 139486992 in words is "one hundred thirty-nine million, four hundred eighty-six thousand, nine hundred ninety-two".