139840926 has 32 divisors (see below), whose sum is σ = 284823168. Its totient is φ = 45761760.

The previous prime is 139840919. The next prime is 139840927. The reversal of 139840926 is 629048931.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139840927) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 217161 + ... + 217803.

It is an arithmetic number, because the mean of its divisors is an integer number (8900724).

Almost surely, 2^139840926 is an apocalyptic number.

139840926 is an abundant number, since it is smaller than the sum of its proper divisors (144982242).

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

139840926 is a wasteful number, since it uses less digits than its factorization.

139840926 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1256.

The product of its (nonzero) digits is 93312, while the sum is 42.

The square root of 139840926 is about 11825.4355522323. The cubic root of 139840926 is about 519.0526711741.

It can be divided in two parts, 1398 and 40926, that added together give a palindrome (42324).

The spelling of 139840926 in words is "one hundred thirty-nine million, eight hundred forty thousand, nine hundred twenty-six".