147621869 has 4 divisors (see below), whose sum is σ = 147852096. Its totient is φ = 147391644.

The previous prime is 147621857. The next prime is 147621893. The reversal of 147621869 is 968126741.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 147621869 - 2²⁰ = 146573293 is a prime.

It is a super-2 number, since 2×147621869² = 43584432414106322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (147621809) 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, 114149 + ... + 115434.

It is an arithmetic number, because the mean of its divisors is an integer number (36963024).

Almost surely, 2^147621869 is an apocalyptic number.

It is an amenable number.

147621869 is a deficient number, since it is larger than the sum of its proper divisors (230227).

147621869 is an equidigital number, since it uses as much as digits as its factorization.

147621869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230226.

The product of its digits is 145152, while the sum is 44.

The square root of 147621869 is about 12149.9740328941. The cubic root of 147621869 is about 528.5063785369.

The spelling of 147621869 in words is "one hundred forty-seven million, six hundred twenty-one thousand, eight hundred sixty-nine".