139007306 has 8 divisors (see below), whose sum is σ = 219485280. Its totient is φ = 65845548.

The previous prime is 139007291. The next prime is 139007311. The reversal of 139007306 is 603700931.

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

It is a super-2 number, since 2×139007306² = 38646062242755272, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1829006 + ... + 1829081.

It is an arithmetic number, because the mean of its divisors is an integer number (27435660).

Almost surely, 2^139007306 is an apocalyptic number.

139007306 is a deficient number, since it is larger than the sum of its proper divisors (80477974).

139007306 is a wasteful number, since it uses less digits than its factorization.

139007306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3658108.

The product of its (nonzero) digits is 3402, while the sum is 29.

The square root of 139007306 is about 11790.1359618963. The cubic root of 139007306 is about 518.0192223156.

The spelling of 139007306 in words is "one hundred thirty-nine million, seven thousand, three hundred six".