402308845 has 8 divisors (see below), whose sum is σ = 485662464. Its totient is φ = 319919184.

The previous prime is 402308827. The next prime is 402308867. The reversal of 402308845 is 548803204.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 402308845 - 2⁵ = 402308813 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 402308845.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 240069 + ... + 241738.

It is an arithmetic number, because the mean of its divisors is an integer number (60707808).

Almost surely, 2^402308845 is an apocalyptic number.

It is an amenable number.

402308845 is a deficient number, since it is larger than the sum of its proper divisors (83353619).

402308845 is a wasteful number, since it uses less digits than its factorization.

402308845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481979.

The product of its (nonzero) digits is 30720, while the sum is 34.

The square root of 402308845 is about 20057.6380713184. The cubic root of 402308845 is about 738.2212237939.

The spelling of 402308845 in words is "four hundred two million, three hundred eight thousand, eight hundred forty-five".