139254654 has 64 divisors (see below), whose sum is σ = 352074240. Its totient is φ = 35665920.

The previous prime is 139254623. The next prime is 139254677. The reversal of 139254654 is 456452931.

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, 31662 + ... + 35790.

It is an arithmetic number, because the mean of its divisors is an integer number (5501160).

Almost surely, 2^139254654 is an apocalyptic number.

139254654 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 139254654, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (176037120).

139254654 is an abundant number, since it is smaller than the sum of its proper divisors (212819586).

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

139254654 is a wasteful number, since it uses less digits than its factorization.

139254654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4225.

The product of its digits is 129600, while the sum is 39.

The square root of 139254654 is about 11800.6209158671. The cubic root of 139254654 is about 518.3262927352.

The spelling of 139254654 in words is "one hundred thirty-nine million, two hundred fifty-four thousand, six hundred fifty-four".