402785841 has 8 divisors (see below), whose sum is σ = 537290784. Its totient is φ = 268402400.

The previous prime is 402785839. The next prime is 402785857. The reversal of 402785841 is 148587204.

It is a happy number.

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 402785841 - 2¹ = 402785839 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 402785841.

It is not an unprimeable number, because it can be changed into a prime (402785041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22335 + ... + 36116.

It is an arithmetic number, because the mean of its divisors is an integer number (67161348).

Almost surely, 2^402785841 is an apocalyptic number.

It is an amenable number.

402785841 is a deficient number, since it is larger than the sum of its proper divisors (134504943).

402785841 is a wasteful number, since it uses less digits than its factorization.

402785841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60751.

The product of its (nonzero) digits is 71680, while the sum is 39.

The square root of 402785841 is about 20069.5251812294. The cubic root of 402785841 is about 738.5128649880.

The spelling of 402785841 in words is "four hundred two million, seven hundred eighty-five thousand, eight hundred forty-one".