3393252721 has 16 divisors (see below), whose sum is σ = 3690820224. Its totient is φ = 3110811264.

The previous prime is 3393252713. The next prime is 3393252727. The reversal of 3393252721 is 1272523933.

It is a cyclic number.

It is not a de Polignac number, because 3393252721 - 2³ = 3393252713 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3393252727) 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, 27261 + ... + 86773.

It is an arithmetic number, because the mean of its divisors is an integer number (230676264).

Almost surely, 2^3393252721 is an apocalyptic number.

It is an amenable number.

3393252721 is a deficient number, since it is larger than the sum of its proper divisors (297567503).

3393252721 is a wasteful number, since it uses less digits than its factorization.

3393252721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59640.

The product of its digits is 68040, while the sum is 37.

The square root of 3393252721 is about 58251.6327753995. The cubic root of 3393252721 is about 1502.6992466131.

The spelling of 3393252721 in words is "three billion, three hundred ninety-three million, two hundred fifty-two thousand, seven hundred twenty-one".