945395431 has 4 divisors (see below), whose sum is σ = 945565792. Its totient is φ = 945225072.

The previous prime is 945395401. The next prime is 945395441. The reversal of 945395431 is 134593549.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 134593549 = 19 ⋅7083871.

It is a cyclic number.

It is not a de Polignac number, because 945395431 - 2¹⁹ = 944871143 is a prime.

It is a super-2 number, since 2×945395431² = 1787545041911351522, 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 (945395401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76566 + ... + 88051.

It is an arithmetic number, because the mean of its divisors is an integer number (236391448).

Almost surely, 2^945395431 is an apocalyptic number.

945395431 is a deficient number, since it is larger than the sum of its proper divisors (170361).

945395431 is a wasteful number, since it uses less digits than its factorization.

945395431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170360.

The product of its digits is 291600, while the sum is 43.

The square root of 945395431 is about 30747.2833108878. The cubic root of 945395431 is about 981.4567502679.

The spelling of 945395431 in words is "nine hundred forty-five million, three hundred ninety-five thousand, four hundred thirty-one".