139734999 has 24 divisors (see below), whose sum is σ = 207050480. Its totient is φ = 90782208.

The previous prime is 139734989. The next prime is 139735003. The reversal of 139734999 is 999437931.

It is not a de Polignac number, because 139734999 - 2⁴ = 139734983 is a prime.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139734919) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 57297 + ... + 59685.

Almost surely, 2^139734999 is an apocalyptic number.

139734999 is a deficient number, since it is larger than the sum of its proper divisors (67315481).

139734999 is a wasteful number, since it uses less digits than its factorization.

139734999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2559 (or 2556 counting only the distinct ones).

The product of its digits is 1653372, while the sum is 54.

The square root of 139734999 is about 11820.9559258124. The cubic root of 139734999 is about 518.9215803643.

The spelling of 139734999 in words is "one hundred thirty-nine million, seven hundred thirty-four thousand, nine hundred ninety-nine".