147990 has 16 divisors (see below), whose sum is σ = 355248. Its totient is φ = 39456.

The previous prime is 147977. The next prime is 147997. The reversal of 147990 is 99741.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 4933 = 147990 / (1 + 4 + 7 + 9 + 9 + 0).

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 147990.

It is not an unprimeable number, because it can be changed into a prime (147997) by changing a digit.

147990 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2437 + ... + 2496.

It is an arithmetic number, because the mean of its divisors is an integer number (22203).

2¹⁴⁷⁹⁹⁰ is an apocalyptic number.

147990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

147990 is an abundant number, since it is smaller than the sum of its proper divisors (207258).

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

147990 is a wasteful number, since it uses less digits than its factorization.

147990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4943.

The product of its (nonzero) digits is 2268, while the sum is 30.

The square root of 147990 is about 384.6946841328. The cubic root of 147990 is about 52.8945333550.

It can be divided in two parts, 147 and 990, that multiplied together give a triangular number (145530 = T₅₃₉).

The spelling of 147990 in words is "one hundred forty-seven thousand, nine hundred ninety".