139190000 has 100 divisors (see below), whose sum is σ = 348638400. Its totient is φ = 53760000.

The previous prime is 139189979. The next prime is 139190003. The reversal of 139190000 is 91931.

It is a tau number, because it is divible by the number of its divisors (100).

It is a super-2 number, since 2×139190000² = 38747712200000000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139190003) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 309776 + ... + 310224.

It is an arithmetic number, because the mean of its divisors is an integer number (3486384).

Almost surely, 2^139190000 is an apocalyptic number.

139190000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 139190000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (174319200).

139190000 is an abundant number, since it is smaller than the sum of its proper divisors (209448400).

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

139190000 is an equidigital number, since it uses as much as digits as its factorization.

139190000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508 (or 487 counting only the distinct ones).

The product of its (nonzero) digits is 243, while the sum is 23.

The square root of 139190000 is about 11797.8811657009. The cubic root of 139190000 is about 518.2460630867.

The spelling of 139190000 in words is "one hundred thirty-nine million, one hundred ninety thousand".