147639793 has 12 divisors (see below), whose sum is σ = 174311472. Its totient is φ = 124656840.

The previous prime is 147639787. The next prime is 147639809. The reversal of 147639793 is 397936741.

It is a happy number.

It is not a de Polignac number, because 147639793 - 2⁵ = 147639761 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (147639773) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19203 + ... + 25768.

It is an arithmetic number, because the mean of its divisors is an integer number (14525956).

Almost surely, 2^147639793 is an apocalyptic number.

It is an amenable number.

147639793 is a deficient number, since it is larger than the sum of its proper divisors (26671679).

147639793 is an equidigital number, since it uses as much as digits as its factorization.

147639793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45052 (or 45045 counting only the distinct ones).

The product of its digits is 857304, while the sum is 49.

The square root of 147639793 is about 12150.7116252506. The cubic root of 147639793 is about 528.5277677909.

The spelling of 147639793 in words is "one hundred forty-seven million, six hundred thirty-nine thousand, seven hundred ninety-three".