139154862 has 64 divisors (see below), whose sum is σ = 348364800. Its totient is φ = 36000480.

The previous prime is 139154857. The next prime is 139154887. The reversal of 139154862 is 268451931.

139154862 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 139154862.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 165439 + ... + 166277.

It is an arithmetic number, because the mean of its divisors is an integer number (5443200).

Almost surely, 2^139154862 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 139154862, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (174182400).

139154862 is an abundant number, since it is smaller than the sum of its proper divisors (209209938).

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

139154862 is a wasteful number, since it uses less digits than its factorization.

139154862 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1221.

The product of its digits is 51840, while the sum is 39.

The square root of 139154862 is about 11796.3919060024. The cubic root of 139154862 is about 518.2024496500.

The spelling of 139154862 in words is "one hundred thirty-nine million, one hundred fifty-four thousand, eight hundred sixty-two".