3331397440 has 56 divisors (see below), whose sum is σ = 9066166272. Its totient is φ = 1142192640.

The previous prime is 3331397431. The next prime is 3331397473. The reversal of 3331397440 is 447931333.

It is a tau number, because it is divible by the number of its divisors (56).

It is a super-2 number, since 2×3331397440² = 22196417806477107200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3331397440.

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, 741376 + ... + 745855.

Almost surely, 2^3331397440 is an apocalyptic number.

It is an amenable number.

3331397440 is an abundant number, since it is smaller than the sum of its proper divisors (5734768832).

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

3331397440 is a wasteful number, since it uses less digits than its factorization.

3331397440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1487255 (or 1487245 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 37.

The square root of 3331397440 is about 57718.2591560071. The cubic root of 3331397440 is about 1493.5123421323.

The spelling of 3331397440 in words is "three billion, three hundred thirty-one million, three hundred ninety-seven thousand, four hundred forty".