139799190 has 64 divisors (see below), whose sum is σ = 345692160. Its totient is φ = 36167040.

The previous prime is 139799173. The next prime is 139799263. The reversal of 139799190 is 91997931.

It is a super-2 number, since 2×139799190² = 39087627049312200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 144087 + ... + 145053.

It is an arithmetic number, because the mean of its divisors is an integer number (5401440).

Almost surely, 2^139799190 is an apocalyptic number.

139799190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 139799190, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (172846080).

139799190 is an abundant number, since it is smaller than the sum of its proper divisors (205892970).

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

139799190 is a wasteful number, since it uses less digits than its factorization.

139799190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1117.

The product of its (nonzero) digits is 137781, while the sum is 48.

The square root of 139799190 is about 11823.6707498137. The cubic root of 139799190 is about 519.0010283577.

The spelling of 139799190 in words is "one hundred thirty-nine million, seven hundred ninety-nine thousand, one hundred ninety".