402863851 has 8 divisors (see below), whose sum is σ = 438150384. Its totient is φ = 368191200.

The previous prime is 402863849. The next prime is 402863863. The reversal of 402863851 is 158368204.

It is a happy number.

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

It is not a de Polignac number, because 402863851 - 2¹ = 402863849 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 402863851.

It is not an unprimeable number, because it can be changed into a prime (402864851) 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, 152101 + ... + 154726.

It is an arithmetic number, because the mean of its divisors is an integer number (54768798).

Almost surely, 2^402863851 is an apocalyptic number.

402863851 is a deficient number, since it is larger than the sum of its proper divisors (35286533).

402863851 is a wasteful number, since it uses less digits than its factorization.

402863851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306941.

The product of its (nonzero) digits is 46080, while the sum is 37.

The square root of 402863851 is about 20071.4685810481. The cubic root of 402863851 is about 738.5605393465.

The spelling of 402863851 in words is "four hundred two million, eight hundred sixty-three thousand, eight hundred fifty-one".