402848881 has 4 divisors (see below), whose sum is σ = 426545892. Its totient is φ = 379151872.

The previous prime is 402848863. The next prime is 402848893. The reversal of 402848881 is 188848204.

It is a happy number.

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 243079281 + 159769600 = 15591^2 + 12640^2 .

It is a cyclic number.

It is not a de Polignac number, because 402848881 - 2⁷ = 402848753 is a prime.

It is a super-2 number, since 2×402848881² = 324574441845904322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402848801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11848480 + ... + 11848513.

It is an arithmetic number, because the mean of its divisors is an integer number (106636473).

Almost surely, 2^402848881 is an apocalyptic number.

It is an amenable number.

402848881 is a deficient number, since it is larger than the sum of its proper divisors (23697011).

402848881 is a wasteful number, since it uses less digits than its factorization.

402848881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23697010.

The product of its (nonzero) digits is 131072, while the sum is 43.

The square root of 402848881 is about 20071.0956601776. The cubic root of 402848881 is about 738.5513911870.

The spelling of 402848881 in words is "four hundred two million, eight hundred forty-eight thousand, eight hundred eighty-one".