3388732421 has 4 divisors (see below), whose sum is σ = 3389010144. Its totient is φ = 3388454700.

The previous prime is 3388732411. The next prime is 3388732427. The reversal of 3388732421 is 1242378833.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3388732421 is a prime.

It is a super-2 number, since 2×3388732421² = 22967014842273042482, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3388732427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119675 + ... + 145256.

It is an arithmetic number, because the mean of its divisors is an integer number (847252536).

Almost surely, 2^3388732421 is an apocalyptic number.

It is an amenable number.

3388732421 is a deficient number, since it is larger than the sum of its proper divisors (277723).

3388732421 is a wasteful number, since it uses less digits than its factorization.

3388732421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277722.

The product of its digits is 193536, while the sum is 41.

The square root of 3388732421 is about 58212.8200742757. The cubic root of 3388732421 is about 1502.0316796834.

The spelling of 3388732421 in words is "three billion, three hundred eighty-eight million, seven hundred thirty-two thousand, four hundred twenty-one".