139433718 has 16 divisors (see below), whose sum is σ = 279750960. Its totient is φ = 46330656.

The previous prime is 139433713. The next prime is 139433747. The reversal of 139433718 is 817334931.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139433713) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34753 + ... + 38556.

It is an arithmetic number, because the mean of its divisors is an integer number (17484435).

Almost surely, 2^139433718 is an apocalyptic number.

139433718 is an abundant number, since it is smaller than the sum of its proper divisors (140317242).

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

139433718 is a wasteful number, since it uses less digits than its factorization.

139433718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73631.

The product of its digits is 54432, while the sum is 39.

The square root of 139433718 is about 11808.2055368290. The cubic root of 139433718 is about 518.5483650868.

The spelling of 139433718 in words is "one hundred thirty-nine million, four hundred thirty-three thousand, seven hundred eighteen".