444603690 has 48 divisors (see below), whose sum is σ = 1163099808. Its totient is φ = 117829728.

The previous prime is 444603673. The next prime is 444603751. The reversal of 444603690 is 96306444.

444603690 is a `hidden beast` number, since 4 + 44 + 603 + 6 + 9 + 0 = 666.

It is a super-2 number, since 2×444603690² = 395344882323232200, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 484 + ... + 29823.

It is an arithmetic number, because the mean of its divisors is an integer number (24231246).

Almost surely, 2^444603690 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 444603690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (581549904).

444603690 is an abundant number, since it is smaller than the sum of its proper divisors (718496118).

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

444603690 is a wasteful number, since it uses less digits than its factorization.

444603690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30483 (or 30480 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 36.

The square root of 444603690 is about 21085.6275695081. The cubic root of 444603690 is about 763.2339628129.

The spelling of 444603690 in words is "four hundred forty-four million, six hundred three thousand, six hundred ninety".