147139944 has 48 divisors (see below), whose sum is σ = 427910400. Its totient is φ = 42039648.

The previous prime is 147139871. The next prime is 147139957. The reversal of 147139944 is 449931741.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 147139896 and 147139905.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 61384 + ... + 63735.

It is an arithmetic number, because the mean of its divisors is an integer number (8914800).

Almost surely, 2^147139944 is an apocalyptic number.

147139944 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

147139944 is an abundant number, since it is smaller than the sum of its proper divisors (280770456).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

147139944 is a wasteful number, since it uses less digits than its factorization.

147139944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125142 (or 125131 counting only the distinct ones).

The product of its digits is 108864, while the sum is 42.

The square root of 147139944 is about 12130.1254733824. The cubic root of 147139944 is about 527.9306325308.

The spelling of 147139944 in words is "one hundred forty-seven million, one hundred thirty-nine thousand, nine hundred forty-four".