139459490 has 16 divisors (see below), whose sum is σ = 254206080. Its totient is φ = 55077360.

The previous prime is 139459477. The next prime is 139459499. The reversal of 139459490 is 94954931.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (139459499) 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, 87476 + ... + 89055.

It is an arithmetic number, because the mean of its divisors is an integer number (15887880).

Almost surely, 2^139459490 is an apocalyptic number.

139459490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

139459490 is a deficient number, since it is larger than the sum of its proper divisors (114746590).

139459490 is a wasteful number, since it uses less digits than its factorization.

139459490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176617.

The product of its (nonzero) digits is 174960, while the sum is 44.

The square root of 139459490 is about 11809.2967614503. The cubic root of 139459490 is about 518.5803114610.

The spelling of 139459490 in words is "one hundred thirty-nine million, four hundred fifty-nine thousand, four hundred ninety".