402214405 has 4 divisors (see below), whose sum is σ = 482657292. Its totient is φ = 321771520.

The previous prime is 402214381. The next prime is 402214411. The reversal of 402214405 is 504412204.

It is a happy number.

402214405 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

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 154529761 + 247684644 = 12431^2 + 15738^2 .

It is not a de Polignac number, because 402214405 - 2⁷ = 402214277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40221436 + ... + 40221445.

It is an arithmetic number, because the mean of its divisors is an integer number (120664323).

Almost surely, 2^402214405 is an apocalyptic number.

It is an amenable number.

402214405 is a deficient number, since it is larger than the sum of its proper divisors (80442887).

402214405 is an equidigital number, since it uses as much as digits as its factorization.

402214405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80442886.

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 402214405 is about 20055.2837177638. The cubic root of 402214405 is about 738.1634546868.

Adding to 402214405 its reverse (504412204), we get a palindrome (906626609).

The spelling of 402214405 in words is "four hundred two million, two hundred fourteen thousand, four hundred five".