440081390 has 16 divisors (see below), whose sum is σ = 905310432. Its totient is φ = 150885024.

The previous prime is 440081387. The next prime is 440081399. The reversal of 440081390 is 93180044.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440081399) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3143369 + ... + 3143508.

It is an arithmetic number, because the mean of its divisors is an integer number (56581902).

Almost surely, 2^440081390 is an apocalyptic number.

440081390 is an abundant number, since it is smaller than the sum of its proper divisors (465229042).

440081390 is a wasteful number, since it uses less digits than its factorization.

440081390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6286891.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 440081390 is about 20978.1169316981. The cubic root of 440081390 is about 760.6373865792.

The spelling of 440081390 in words is "four hundred forty million, eighty-one thousand, three hundred ninety".