402381377 has 4 divisors (see below), whose sum is σ = 402517680. Its totient is φ = 402245076.

The previous prime is 402381367. The next prime is 402381407. The reversal of 402381377 is 773183204.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 402381377 - 2¹⁰ = 402380353 is a prime.

It is a super-2 number, since 2×402381377² = 323821545112832258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402381367) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63623 + ... + 69660.

It is an arithmetic number, because the mean of its divisors is an integer number (100629420).

Almost surely, 2^402381377 is an apocalyptic number.

It is an amenable number.

402381377 is a deficient number, since it is larger than the sum of its proper divisors (136303).

402381377 is a wasteful number, since it uses less digits than its factorization.

402381377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136302.

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 402381377 is about 20059.4460790920. The cubic root of 402381377 is about 738.2655856028.

The spelling of 402381377 in words is "four hundred two million, three hundred eighty-one thousand, three hundred seventy-seven".