139950895 has 16 divisors (see below), whose sum is σ = 198125568. Its totient is φ = 92869920.

The previous prime is 139950871. The next prime is 139950901. The reversal of 139950895 is 598059931.

It is a happy number.

It is not a de Polignac number, because 139950895 - 2⁹ = 139950383 is a prime.

It is a super-2 number, since 2×139950895² = 39172506022602050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63409 + ... + 65578.

It is an arithmetic number, because the mean of its divisors is an integer number (12382848).

Almost surely, 2^139950895 is an apocalyptic number.

139950895 is a deficient number, since it is larger than the sum of its proper divisors (58174673).

139950895 is a wasteful number, since it uses less digits than its factorization.

139950895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129030.

The product of its (nonzero) digits is 437400, while the sum is 49.

The square root of 139950895 is about 11830.0843192261. The cubic root of 139950895 is about 519.1886941756.

The spelling of 139950895 in words is "one hundred thirty-nine million, nine hundred fifty thousand, eight hundred ninety-five".