445403442 has 32 divisors (see below), whose sum is σ = 972544320. Its totient is φ = 134865920.

The previous prime is 445403423. The next prime is 445403461. The reversal of 445403442 is 244304544.

It is an interprime number because it is at equal distance from previous prime (445403423) and next prime (445403461).

It is a super-2 number, since 2×445403442² = 396768452290894728, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 148534 + ... + 151502.

It is an arithmetic number, because the mean of its divisors is an integer number (30392010).

Almost surely, 2^445403442 is an apocalyptic number.

445403442 is an abundant number, since it is smaller than the sum of its proper divisors (527140878).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

445403442 is a wasteful number, since it uses less digits than its factorization.

445403442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5258.

The product of its (nonzero) digits is 30720, while the sum is 30.

The square root of 445403442 is about 21104.5834358321. The cubic root of 445403442 is about 763.6913231342.

Adding to 445403442 its reverse (244304544), we get a palindrome (689707986).

The spelling of 445403442 in words is "four hundred forty-five million, four hundred three thousand, four hundred forty-two".