402878877 has 8 divisors (see below), whose sum is σ = 548601216. Its totient is φ = 262871232.

The previous prime is 402878873. The next prime is 402878899. The reversal of 402878877 is 778878204.

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

It is not a de Polignac number, because 402878877 - 2² = 402878873 is a prime.

It is a super-2 number, since 2×402878877² = 324622779065562258, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402878873) 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 7 ways as a sum of consecutive naturals, for example, 1428508 + ... + 1428789.

It is an arithmetic number, because the mean of its divisors is an integer number (68575152).

Almost surely, 2^402878877 is an apocalyptic number.

402878877 is a gapful number since it is divisible by the number (47) formed by its first and last digit.

It is an amenable number.

402878877 is a deficient number, since it is larger than the sum of its proper divisors (145722339).

402878877 is a wasteful number, since it uses less digits than its factorization.

402878877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2857347.

The product of its (nonzero) digits is 1404928, while the sum is 51.

The square root of 402878877 is about 20071.8428899790. The cubic root of 402878877 is about 738.5697214996.

The spelling of 402878877 in words is "four hundred two million, eight hundred seventy-eight thousand, eight hundred seventy-seven".