4406388240 has 40 divisors (see below), whose sum is σ = 13659804288. Its totient is φ = 1175036800.

The previous prime is 4406388223. The next prime is 4406388247. The reversal of 4406388240 is 428836044.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×4406388240² = 38832514643220595200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4406388247) 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, 9179736 + ... + 9180215.

Almost surely, 2^4406388240 is an apocalyptic number.

4406388240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4406388240 is an abundant number, since it is smaller than the sum of its proper divisors (9253416048).

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

4406388240 is a wasteful number, since it uses less digits than its factorization.

4406388240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18359967 (or 18359961 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 39.

The square root of 4406388240 is about 66380.6315125127. The cubic root of 4406388240 is about 1639.4351911878.

It can be divided in two parts, 440638 and 8240, that added together give a triangular number (448878 = T₉₄₇).

The spelling of 4406388240 in words is "four billion, four hundred six million, three hundred eighty-eight thousand, two hundred forty".