442648245 has 16 divisors (see below), whose sum is σ = 762717312. Its totient is φ = 217919040.

The previous prime is 442648243. The next prime is 442648247. The reversal of 442648245 is 542846244.

It is an interprime number because it is at equal distance from previous prime (442648243) and next prime (442648247).

It is not a de Polignac number, because 442648245 - 2¹ = 442648243 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442648243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1134801 + ... + 1135190.

It is an arithmetic number, because the mean of its divisors is an integer number (47669832).

Almost surely, 2^442648245 is an apocalyptic number.

It is an amenable number.

442648245 is a deficient number, since it is larger than the sum of its proper divisors (320069067).

442648245 is a wasteful number, since it uses less digits than its factorization.

442648245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2270012.

The product of its digits is 245760, while the sum is 39.

The square root of 442648245 is about 21039.2073282241. The cubic root of 442648245 is about 762.1133727469.

The spelling of 442648245 in words is "four hundred forty-two million, six hundred forty-eight thousand, two hundred forty-five".