139677486 has 48 divisors (see below), whose sum is σ = 304980480. Its totient is φ = 42625440.

The previous prime is 139677469. The next prime is 139677509. The reversal of 139677486 is 684776931.

139677486 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 140451 + ... + 141441.

It is an arithmetic number, because the mean of its divisors is an integer number (6353760).

Almost surely, 2^139677486 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 139677486, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (152490240).

139677486 is an abundant number, since it is smaller than the sum of its proper divisors (165302994).

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

139677486 is a wasteful number, since it uses less digits than its factorization.

139677486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1161 (or 1148 counting only the distinct ones).

The product of its digits is 1524096, while the sum is 51.

The square root of 139677486 is about 11818.5230041660. The cubic root of 139677486 is about 518.8503769374.

The spelling of 139677486 in words is "one hundred thirty-nine million, six hundred seventy-seven thousand, four hundred eighty-six".