402995745 has 24 divisors (see below), whose sum is σ = 722615400. Its totient is φ = 207518976.

The previous prime is 402995731. The next prime is 402995779. The reversal of 402995745 is 547599204.

It can be written as a sum of positive squares in 4 ways, for example, as 157854096 + 245141649 = 12564^2 + 15657^2 .

It is not a de Polignac number, because 402995745 - 2⁵ = 402995713 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 402995745.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 153100 + ... + 155709.

It is an arithmetic number, because the mean of its divisors is an integer number (30108975).

Almost surely, 2^402995745 is an apocalyptic number.

402995745 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

402995745 is a deficient number, since it is larger than the sum of its proper divisors (319619655).

402995745 is a wasteful number, since it uses less digits than its factorization.

402995745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308849 (or 308846 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 45.

The square root of 402995745 is about 20074.7539212813. The cubic root of 402995745 is about 738.6411299106.

The spelling of 402995745 in words is "four hundred two million, nine hundred ninety-five thousand, seven hundred forty-five".