139654063 has 4 divisors (see below), whose sum is σ = 141738520. Its totient is φ = 137569608.

The previous prime is 139654049. The next prime is 139654069. The reversal of 139654063 is 360456931.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-139654063 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 (139654069) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1042128 + ... + 1042261.

It is an arithmetic number, because the mean of its divisors is an integer number (35434630).

Almost surely, 2^139654063 is an apocalyptic number.

139654063 is a deficient number, since it is larger than the sum of its proper divisors (2084457).

139654063 is an equidigital number, since it uses as much as digits as its factorization.

139654063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2084456.

The product of its (nonzero) digits is 58320, while the sum is 37.

The square root of 139654063 is about 11817.5320181500. The cubic root of 139654063 is about 518.8213727122.

The spelling of 139654063 in words is "one hundred thirty-nine million, six hundred fifty-four thousand, sixty-three".