139593490 has 8 divisors (see below), whose sum is σ = 251268300. Its totient is φ = 55837392.

The previous prime is 139593457. The next prime is 139593499. The reversal of 139593490 is 94395931.

It can be written as a sum of positive squares in 2 ways, for example, as 134490409 + 5103081 = 11597^2 + 2259^2 .

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 (139593499) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6979665 + ... + 6979684.

Almost surely, 2^139593490 is an apocalyptic number.

139593490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

139593490 is a deficient number, since it is larger than the sum of its proper divisors (111674810).

139593490 is a wasteful number, since it uses less digits than its factorization.

139593490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13959356.

The product of its (nonzero) digits is 131220, while the sum is 43.

The square root of 139593490 is about 11814.9688954309. The cubic root of 139593490 is about 518.7463513558.

The spelling of 139593490 in words is "one hundred thirty-nine million, five hundred ninety-three thousand, four hundred ninety".