8940440 has 32 divisors (see below), whose sum is σ = 20202480. Its totient is φ = 3560832.

The previous prime is 8940433. The next prime is 8940457. The reversal of 8940440 is 440498.

8940440 = 294² + 295² + ... + 373².

It is a happy number.

It is a super-3 number, since 3×8940440³ (a number of 22 digits) contains 333 as substring.

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, 15599 + ... + 16161.

Almost surely, 2^8940440 is an apocalyptic number.

It is an amenable number.

8940440 is an abundant number, since it is smaller than the sum of its proper divisors (11262040).

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

8940440 is a wasteful number, since it uses less digits than its factorization.

8940440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 971 (or 967 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 8940440 is about 2990.0568556467. The cubic root of 8940440 is about 207.5485152925.

The spelling of 8940440 in words is "eight million, nine hundred forty thousand, four hundred forty".