139706319 has 8 divisors (see below), whose sum is σ = 186675840. Its totient is φ = 92937176.

The previous prime is 139706317. The next prime is 139706341. The reversal of 139706319 is 913607931.

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 139706319 - 2¹ = 139706317 is a prime.

It is a super-2 number, since 2×139706319² = 39035711137059522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139706317) 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, 48459 + ... + 51260.

It is an arithmetic number, because the mean of its divisors is an integer number (23334480).

Almost surely, 2^139706319 is an apocalyptic number.

139706319 is a deficient number, since it is larger than the sum of its proper divisors (46969521).

139706319 is an equidigital number, since it uses as much as digits as its factorization.

139706319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100189.

The product of its (nonzero) digits is 30618, while the sum is 39.

The square root of 139706319 is about 11819.7427636984. The cubic root of 139706319 is about 518.8860758036.

The spelling of 139706319 in words is "one hundred thirty-nine million, seven hundred six thousand, three hundred nineteen".