3438097921 has 4 divisors (see below), whose sum is σ = 3494460244. Its totient is φ = 3381735600.

The previous prime is 3438097919. The next prime is 3438097951. The reversal of 3438097921 is 1297908343.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1741893696 + 1696204225 = 41736^2 + 41185^2 .

It is a cyclic number.

It is not a de Polignac number, because 3438097921 - 2¹ = 3438097919 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3438097951) 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, 28181070 + ... + 28181191.

It is an arithmetic number, because the mean of its divisors is an integer number (873615061).

Almost surely, 2^3438097921 is an apocalyptic number.

It is an amenable number.

3438097921 is a deficient number, since it is larger than the sum of its proper divisors (56362323).

3438097921 is an equidigital number, since it uses as much as digits as its factorization.

3438097921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56362322.

The product of its (nonzero) digits is 326592, while the sum is 46.

The square root of 3438097921 is about 58635.2958634985. The cubic root of 3438097921 is about 1509.2901830273.

The spelling of 3438097921 in words is "three billion, four hundred thirty-eight million, ninety-seven thousand, nine hundred twenty-one".