3457981421 has 16 divisors (see below), whose sum is σ = 3570571200. Its totient is φ = 3347688960.

The previous prime is 3457981403. The next prime is 3457981447. The reversal of 3457981421 is 1241897543.

It is a cyclic number.

It is not a de Polignac number, because 3457981421 - 2¹⁸ = 3457719277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3457981921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 966566 + ... + 970136.

It is an arithmetic number, because the mean of its divisors is an integer number (223160700).

Almost surely, 2^3457981421 is an apocalyptic number.

It is an amenable number.

3457981421 is a deficient number, since it is larger than the sum of its proper divisors (112589779).

3457981421 is a wasteful number, since it uses less digits than its factorization.

3457981421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3884.

The product of its digits is 241920, while the sum is 44.

The square root of 3457981421 is about 58804.6037398434. The cubic root of 3457981421 is about 1512.1941437959.

The spelling of 3457981421 in words is "three billion, four hundred fifty-seven million, nine hundred eighty-one thousand, four hundred twenty-one".