442149417 has 24 divisors (see below), whose sum is σ = 647125128. Its totient is φ = 290880000.

The previous prime is 442149403. The next prime is 442149443. The reversal of 442149417 is 714941244.

It can be written as a sum of positive squares in 4 ways, for example, as 199911321 + 242238096 = 14139^2 + 15564^2 .

It is not a de Polignac number, because 442149417 - 2¹² = 442145321 is a prime.

It is a super-2 number, since 2×442149417² = 390992213906879778, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (442149517) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 363903 + ... + 365115.

It is an arithmetic number, because the mean of its divisors is an integer number (26963547).

Almost surely, 2^442149417 is an apocalyptic number.

It is an amenable number.

442149417 is a deficient number, since it is larger than the sum of its proper divisors (204975711).

442149417 is a wasteful number, since it uses less digits than its factorization.

442149417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1721 (or 1718 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 442149417 is about 21027.3492623298. The cubic root of 442149417 is about 761.8269855402.

The spelling of 442149417 in words is "four hundred forty-two million, one hundred forty-nine thousand, four hundred seventeen".