3409477921 has 4 divisors (see below), whose sum is σ = 3456183172. Its totient is φ = 3362772672.

The previous prime is 3409477889. The next prime is 3409477931. The reversal of 3409477921 is 1297749043.

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 2699841600 + 709636321 = 51960^2 + 26639^2 .

It is a cyclic number.

It is not a de Polignac number, because 3409477921 - 2⁵ = 3409477889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3409477931) 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, 23352516 + ... + 23352661.

It is an arithmetic number, because the mean of its divisors is an integer number (864045793).

Almost surely, 2^3409477921 is an apocalyptic number.

It is an amenable number.

3409477921 is a deficient number, since it is larger than the sum of its proper divisors (46705251).

3409477921 is an equidigital number, since it uses as much as digits as its factorization.

3409477921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46705250.

The product of its (nonzero) digits is 381024, while the sum is 46.

The square root of 3409477921 is about 58390.7348900491. The cubic root of 3409477921 is about 1505.0905448407.

The spelling of 3409477921 in words is "three billion, four hundred nine million, four hundred seventy-seven thousand, nine hundred twenty-one".