147990361 has 8 divisors (see below), whose sum is σ = 152022024. Its totient is φ = 143978880.

The previous prime is 147990329. The next prime is 147990377. The reversal of 147990361 is 163099741.

It can be written as a sum of positive squares in 4 ways, for example, as 7425625 + 140564736 = 2725^2 + 11856^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 147990361 - 2⁵ = 147990329 is a prime.

It is a super-2 number, since 2×147990361² = 43802293897820642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (147990061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10455 + ... + 20131.

It is an arithmetic number, because the mean of its divisors is an integer number (19002753).

Almost surely, 2^147990361 is an apocalyptic number.

It is an amenable number.

147990361 is a deficient number, since it is larger than the sum of its proper divisors (4031663).

147990361 is an equidigital number, since it uses as much as digits as its factorization.

147990361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10091.

The product of its (nonzero) digits is 40824, while the sum is 40.

The square root of 147990361 is about 12165.1288936862. The cubic root of 147990361 is about 528.9457636442.

The spelling of 147990361 in words is "one hundred forty-seven million, nine hundred ninety thousand, three hundred sixty-one".