139395693 has 8 divisors (see below), whose sum is σ = 187777408. Its totient is φ = 91972224.

The previous prime is 139395691. The next prime is 139395703. The reversal of 139395693 is 396593931.

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

It is not a de Polignac number, because 139395693 - 2¹ = 139395691 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139395691) 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, 239221 + ... + 239802.

It is an arithmetic number, because the mean of its divisors is an integer number (23472176).

Almost surely, 2^139395693 is an apocalyptic number.

It is an amenable number.

139395693 is a deficient number, since it is larger than the sum of its proper divisors (48381715).

139395693 is an equidigital number, since it uses as much as digits as its factorization.

139395693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479123.

The product of its digits is 590490, while the sum is 48.

The square root of 139395693 is about 11806.5953178721. The cubic root of 139395693 is about 518.5012229882.

The spelling of 139395693 in words is "one hundred thirty-nine million, three hundred ninety-five thousand, six hundred ninety-three".