402443377 has 4 divisors (see below), whose sum is σ = 459935296. Its totient is φ = 344951460.

The previous prime is 402443347. The next prime is 402443381. The reversal of 402443377 is 773344204.

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 not a de Polignac number, because 402443377 - 2²³ = 394054769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402443347) 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, 28745949 + ... + 28745962.

It is an arithmetic number, because the mean of its divisors is an integer number (114983824).

Almost surely, 2^402443377 is an apocalyptic number.

It is an amenable number.

402443377 is a deficient number, since it is larger than the sum of its proper divisors (57491919).

402443377 is an equidigital number, since it uses as much as digits as its factorization.

402443377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57491918.

The product of its (nonzero) digits is 56448, while the sum is 34.

The square root of 402443377 is about 20060.9914261484. The cubic root of 402443377 is about 738.3035016349.

The spelling of 402443377 in words is "four hundred two million, four hundred forty-three thousand, three hundred seventy-seven".