565429397 has 4 divisors (see below), whose sum is σ = 608923980. Its totient is φ = 521934816.

The previous prime is 565429373. The next prime is 565429427. The reversal of 565429397 is 793924565.

It is a happy number.

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 254753521 + 310675876 = 15961^2 + 17626^2 .

It is not a de Polignac number, because 565429397 - 2⁸ = 565429141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (565425397) 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, 21747272 + ... + 21747297.

It is an arithmetic number, because the mean of its divisors is an integer number (152230995).

Almost surely, 2^565429397 is an apocalyptic number.

It is an amenable number.

565429397 is a deficient number, since it is larger than the sum of its proper divisors (43494583).

565429397 is a wasteful number, since it uses less digits than its factorization.

565429397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43494582.

The product of its digits is 2041200, while the sum is 50.

The square root of 565429397 is about 23778.7593662916. The cubic root of 565429397 is about 826.9123178607.

The spelling of 565429397 in words is "five hundred sixty-five million, four hundred twenty-nine thousand, three hundred ninety-seven".