139817086 has 16 divisors (see below), whose sum is σ = 222456960. Its totient is φ = 65721240.

The previous prime is 139817081. The next prime is 139817101. The reversal of 139817086 is 680718931.

139817086 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139817081) 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, 9066 + ... + 19021.

It is an arithmetic number, because the mean of its divisors is an integer number (13903560).

Almost surely, 2^139817086 is an apocalyptic number.

139817086 is a deficient number, since it is larger than the sum of its proper divisors (82639874).

139817086 is a wasteful number, since it uses less digits than its factorization.

139817086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28239.

The product of its (nonzero) digits is 72576, while the sum is 43.

The square root of 139817086 is about 11824.4275125691. The cubic root of 139817086 is about 519.0231735649.

The spelling of 139817086 in words is "one hundred thirty-nine million, eight hundred seventeen thousand, eighty-six".