139734907 has 8 divisors (see below), whose sum is σ = 153983984. Its totient is φ = 125985888.

The previous prime is 139734863. The next prime is 139734919. The reversal of 139734907 is 709437931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 139734907 - 2⁷ = 139734779 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139734967) 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, 124428 + ... + 125545.

It is an arithmetic number, because the mean of its divisors is an integer number (19247998).

Almost surely, 2^139734907 is an apocalyptic number.

139734907 is a deficient number, since it is larger than the sum of its proper divisors (14249077).

139734907 is a wasteful number, since it uses less digits than its factorization.

139734907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250029.

The product of its (nonzero) digits is 142884, while the sum is 43.

The square root of 139734907 is about 11820.9520344175. The cubic root of 139734907 is about 518.9214664801.

The spelling of 139734907 in words is "one hundred thirty-nine million, seven hundred thirty-four thousand, nine hundred seven".