4391400440 has 32 divisors (see below), whose sum is σ = 11292173280. Its totient is φ = 1505622912.

The previous prime is 4391400439. The next prime is 4391400493. The reversal of 4391400440 is 440041934.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7841507 + ... + 7842066.

It is an arithmetic number, because the mean of its divisors is an integer number (352880415).

Almost surely, 2^4391400440 is an apocalyptic number.

4391400440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4391400440 is an abundant number, since it is smaller than the sum of its proper divisors (6900772840).

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

4391400440 is a wasteful number, since it uses less digits than its factorization.

4391400440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15683591 (or 15683587 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 4391400440 is about 66267.6424810782. The cubic root of 4391400440 is about 1637.5742991364.

The spelling of 4391400440 in words is "four billion, three hundred ninety-one million, four hundred thousand, four hundred forty".