495621129 has 4 divisors (see below), whose sum is σ = 660828176. Its totient is φ = 330414084.

The previous prime is 495621127. The next prime is 495621151. The reversal of 495621129 is 921126594.

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 not a de Polignac number, because 495621129 - 2¹ = 495621127 is a prime.

It is a super-2 number, since 2×495621129² = 491280607022469282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (495621127) 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, 82603519 + ... + 82603524.

It is an arithmetic number, because the mean of its divisors is an integer number (165207044).

Almost surely, 2^495621129 is an apocalyptic number.

It is an amenable number.

495621129 is a deficient number, since it is larger than the sum of its proper divisors (165207047).

495621129 is a wasteful number, since it uses less digits than its factorization.

495621129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165207046.

The product of its digits is 38880, while the sum is 39.

The square root of 495621129 is about 22262.5499213365. The cubic root of 495621129 is about 791.3767208177.

The spelling of 495621129 in words is "four hundred ninety-five million, six hundred twenty-one thousand, one hundred twenty-nine".