3405721790 has 8 divisors (see below), whose sum is σ = 6130299240. Its totient is φ = 1362288712.

The previous prime is 3405721777. The next prime is 3405721801. The reversal of 3405721790 is 971275043.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 170286080 + ... + 170286099.

It is an arithmetic number, because the mean of its divisors is an integer number (766287405).

Almost surely, 2^3405721790 is an apocalyptic number.

3405721790 is a deficient number, since it is larger than the sum of its proper divisors (2724577450).

3405721790 is a wasteful number, since it uses less digits than its factorization.

3405721790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340572186.

The product of its (nonzero) digits is 52920, while the sum is 38.

The square root of 3405721790 is about 58358.5622681025. The cubic root of 3405721790 is about 1504.5376356963.

The spelling of 3405721790 in words is "three billion, four hundred five million, seven hundred twenty-one thousand, seven hundred ninety".