139932290 has 8 divisors (see below), whose sum is σ = 251878140. Its totient is φ = 55972912.

The previous prime is 139932281. The next prime is 139932293. The reversal of 139932290 is 92239931.

It can be written as a sum of positive squares in 2 ways, for example, as 139736041 + 196249 = 11821^2 + 443^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (139932293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6996605 + ... + 6996624.

Almost surely, 2^139932290 is an apocalyptic number.

139932290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

139932290 is a deficient number, since it is larger than the sum of its proper divisors (111945850).

139932290 is a wasteful number, since it uses less digits than its factorization.

139932290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13993236.

The product of its (nonzero) digits is 26244, while the sum is 38.

The square root of 139932290 is about 11829.2979504280. The cubic root of 139932290 is about 519.1656862634.

The spelling of 139932290 in words is "one hundred thirty-nine million, nine hundred thirty-two thousand, two hundred ninety".