147999965 has 4 divisors (see below), whose sum is σ = 177599964. Its totient is φ = 118399968.

The previous prime is 147999959. The next prime is 147999967. The reversal of 147999965 is 569999741.

147999965 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 105411289 + 42588676 = 10267^2 + 6526^2 .

It is a cyclic number.

It is not a de Polignac number, because 147999965 - 2¹⁰ = 147998941 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (147999967) 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, 14799992 + ... + 14800001.

It is an arithmetic number, because the mean of its divisors is an integer number (44399991).

Almost surely, 2^147999965 is an apocalyptic number.

It is an amenable number.

147999965 is a deficient number, since it is larger than the sum of its proper divisors (29599999).

147999965 is an equidigital number, since it uses as much as digits as its factorization.

147999965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29599998.

The product of its digits is 5511240, while the sum is 59.

The square root of 147999965 is about 12165.5236221052. The cubic root of 147999965 is about 528.9572055723.

The spelling of 147999965 in words is "one hundred forty-seven million, nine hundred ninety-nine thousand, nine hundred sixty-five".