139493663 has 8 divisors (see below), whose sum is σ = 144744432. Its totient is φ = 134320896.

The previous prime is 139493659. The next prime is 139493693. The reversal of 139493663 is 366394931.

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 139493663 - 2² = 139493659 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 (139493633) 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, 15845 + ... + 23022.

It is an arithmetic number, because the mean of its divisors is an integer number (18093054).

Almost surely, 2^139493663 is an apocalyptic number.

139493663 is a deficient number, since it is larger than the sum of its proper divisors (5250769).

139493663 is an equidigital number, since it uses as much as digits as its factorization.

139493663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39001.

The product of its digits is 314928, while the sum is 44.

The square root of 139493663 is about 11810.7435413694. The cubic root of 139493663 is about 518.6226654514.

The spelling of 139493663 in words is "one hundred thirty-nine million, four hundred ninety-three thousand, six hundred sixty-three".