405362879 has 4 divisors (see below), whose sum is σ = 422987376. Its totient is φ = 387738384.

The previous prime is 405362821. The next prime is 405362887. The reversal of 405362879 is 978263504.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-405362879 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 (405362579) 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, 8812214 + ... + 8812259.

It is an arithmetic number, because the mean of its divisors is an integer number (105746844).

Almost surely, 2^405362879 is an apocalyptic number.

405362879 is a deficient number, since it is larger than the sum of its proper divisors (17624497).

405362879 is a wasteful number, since it uses less digits than its factorization.

405362879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17624496.

The product of its (nonzero) digits is 362880, while the sum is 44.

The square root of 405362879 is about 20133.6255801085. The cubic root of 405362879 is about 740.0845283281.

The spelling of 405362879 in words is "four hundred five million, three hundred sixty-two thousand, eight hundred seventy-nine".