4442257478 has 4 divisors (see below), whose sum is σ = 6663386220. Its totient is φ = 2221128738.

The previous prime is 4442257429. The next prime is 4442257531. The reversal of 4442257478 is 8747522444.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110564368 + ... + 1110564371.

It is an arithmetic number, because the mean of its divisors is an integer number (1665846555).

Almost surely, 2^4442257478 is an apocalyptic number.

4442257478 is a deficient number, since it is larger than the sum of its proper divisors (2221128742).

4442257478 is a wasteful number, since it uses less digits than its factorization.

4442257478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2221128741.

The product of its digits is 2007040, while the sum is 47.

The square root of 4442257478 is about 66650.2624000836. The cubic root of 4442257478 is about 1643.8716624894.

The spelling of 4442257478 in words is "four billion, four hundred forty-two million, two hundred fifty-seven thousand, four hundred seventy-eight".