139911889 has 12 divisors (see below), whose sum is σ = 151846812. Its totient is φ = 128856000.

The previous prime is 139911883. The next prime is 139911899. The reversal of 139911889 is 988119931.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 483025 + 139428864 = 695^2 + 11808^2 .

It is not a de Polignac number, because 139911889 - 2³ = 139911881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (139911881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 117879 + ... + 119059.

It is an arithmetic number, because the mean of its divisors is an integer number (12653901).

Almost surely, 2^139911889 is an apocalyptic number.

It is an amenable number.

139911889 is a deficient number, since it is larger than the sum of its proper divisors (11934923).

139911889 is a wasteful number, since it uses less digits than its factorization.

139911889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1908 (or 1895 counting only the distinct ones).

The product of its digits is 139968, while the sum is 49.

The square root of 139911889 is about 11828.4356108490. The cubic root of 139911889 is about 519.1404549797.

The spelling of 139911889 in words is "one hundred thirty-nine million, nine hundred eleven thousand, eight hundred eighty-nine".