139949355 has 128 divisors (see below), whose sum is σ = 301529088. Its totient is φ = 53747712.

The previous prime is 139949347. The next prime is 139949377. The reversal of 139949355 is 553949931.

It is not a de Polignac number, because 139949355 - 2³ = 139949347 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 858504 + ... + 858666.

It is an arithmetic number, because the mean of its divisors is an integer number (2355696).

Almost surely, 2^139949355 is an apocalyptic number.

139949355 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

139949355 is an abundant number, since it is smaller than the sum of its proper divisors (161579733).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

139949355 is a wasteful number, since it uses less digits than its factorization.

139949355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245.

The product of its digits is 656100, while the sum is 48.

The square root of 139949355 is about 11830.0192307536. The cubic root of 139949355 is about 519.1867898088.

The spelling of 139949355 in words is "one hundred thirty-nine million, nine hundred forty-nine thousand, three hundred fifty-five".