139027890 has 16 divisors (see below), whose sum is σ = 333667008. Its totient is φ = 37074096.

The previous prime is 139027859. The next prime is 139027891. The reversal of 139027890 is 98720931.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (139027891) 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, 2317102 + ... + 2317161.

It is an arithmetic number, because the mean of its divisors is an integer number (20854188).

Almost surely, 2^139027890 is an apocalyptic number.

139027890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

139027890 is an abundant number, since it is smaller than the sum of its proper divisors (194639118).

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

139027890 is a wasteful number, since it uses less digits than its factorization.

139027890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4634273.

The product of its (nonzero) digits is 27216, while the sum is 39.

The square root of 139027890 is about 11791.0088626886. The cubic root of 139027890 is about 518.0447902316.

The spelling of 139027890 in words is "one hundred thirty-nine million, twenty-seven thousand, eight hundred ninety".