444386898 has 20 divisors (see below), whose sum is σ = 995756190. Its totient is φ = 148128912.

The previous prime is 444386893. The next prime is 444386911. The reversal of 444386898 is 898683444.

It can be written as a sum of positive squares in only one way, i.e., 266244489 + 178142409 = 16317^2 + 13347^2 .

It is a super-2 number, since 2×444386898² = 394959430228124808, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (444386893) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1371403 + ... + 1371726.

Almost surely, 2^444386898 is an apocalyptic number.

444386898 is an abundant number, since it is smaller than the sum of its proper divisors (551369292).

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

444386898 is a wasteful number, since it uses less digits than its factorization.

444386898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2743143 (or 2743134 counting only the distinct ones).

The product of its digits is 5308416, while the sum is 54.

The square root of 444386898 is about 21080.4861898392. The cubic root of 444386898 is about 763.1098898299.

The spelling of 444386898 in words is "four hundred forty-four million, three hundred eighty-six thousand, eight hundred ninety-eight".