139072990 has 16 divisors (see below), whose sum is σ = 286093152. Its totient is φ = 47682144.

The previous prime is 139072987. The next prime is 139072993. The reversal of 139072990 is 99270931.

It is an interprime number because it is at equal distance from previous prime (139072987) and next prime (139072993).

It is a super-4 number, since 4×139072990⁴ (a number of 34 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139072993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 993309 + ... + 993448.

It is an arithmetic number, because the mean of its divisors is an integer number (17880822).

Almost surely, 2^139072990 is an apocalyptic number.

139072990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

139072990 is an abundant number, since it is smaller than the sum of its proper divisors (147020162).

139072990 is a wasteful number, since it uses less digits than its factorization.

139072990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1986771.

The product of its (nonzero) digits is 30618, while the sum is 40.

The square root of 139072990 is about 11792.9211817938. The cubic root of 139072990 is about 518.1008012812.

The spelling of 139072990 in words is "one hundred thirty-nine million, seventy-two thousand, nine hundred ninety".