495065391 has 4 divisors (see below), whose sum is σ = 660087192. Its totient is φ = 330043592.

The previous prime is 495065357. The next prime is 495065413. The reversal of 495065391 is 193560594.

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

It is a cyclic number.

It is not a de Polignac number, because 495065391 - 2⁶ = 495065327 is a prime.

It is a super-4 number, since 4×495065391⁴ (a number of 36 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (495065191) 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, 82510896 + ... + 82510901.

It is an arithmetic number, because the mean of its divisors is an integer number (165021798).

Almost surely, 2^495065391 is an apocalyptic number.

495065391 is a deficient number, since it is larger than the sum of its proper divisors (165021801).

495065391 is a wasteful number, since it uses less digits than its factorization.

495065391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165021800.

The product of its (nonzero) digits is 145800, while the sum is 42.

The square root of 495065391 is about 22250.0649661973. The cubic root of 495065391 is about 791.0808210035.

The spelling of 495065391 in words is "four hundred ninety-five million, sixty-five thousand, three hundred ninety-one".