440646486 has 32 divisors (see below), whose sum is σ = 1008625920. Its totient is φ = 125719776.

The previous prime is 440646457. The next prime is 440646487. The reversal of 440646486 is 684646044.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440646487) 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, 23940 + ... + 38136.

It is an arithmetic number, because the mean of its divisors is an integer number (31519560).

Almost surely, 2^440646486 is an apocalyptic number.

440646486 is an abundant number, since it is smaller than the sum of its proper divisors (567979434).

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

440646486 is a wasteful number, since it uses less digits than its factorization.

440646486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14948.

The product of its (nonzero) digits is 442368, while the sum is 42.

The square root of 440646486 is about 20991.5813125167. The cubic root of 440646486 is about 760.9628182734.

It can be divided in two parts, 440646 and 486, that multiplied together give a square (214153956 = 14634²).

The spelling of 440646486 in words is "four hundred forty million, six hundred forty-six thousand, four hundred eighty-six".