445878442 has 4 divisors (see below), whose sum is σ = 668817666. Its totient is φ = 222939220.

The previous prime is 445878427. The next prime is 445878457. The reversal of 445878442 is 244878544.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (445878427) and next prime (445878457).

It can be written as a sum of positive squares in only one way, i.e., 441882441 + 3996001 = 21021^2 + 1999^2 .

It is a junction number, because it is equal to n+sod(n) for n = 445878392 and 445878401.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 111469609 + ... + 111469612.

Almost surely, 2^445878442 is an apocalyptic number.

445878442 is a deficient number, since it is larger than the sum of its proper divisors (222939224).

445878442 is a wasteful number, since it uses less digits than its factorization.

445878442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222939223.

The product of its digits is 1146880, while the sum is 46.

The square root of 445878442 is about 21115.8339167555. The cubic root of 445878442 is about 763.9627059361.

The spelling of 445878442 in words is "four hundred forty-five million, eight hundred seventy-eight thousand, four hundred forty-two".