3405998997 has 16 divisors (see below), whose sum is σ = 5163273280. Its totient is φ = 2217859056.

The previous prime is 3405998951. The next prime is 3405999013. The reversal of 3405998997 is 7998995043.

It is a happy number.

3405998997 is a `hidden beast` number, since 34 + 0 + 599 + 8 + 9 + 9 + 7 = 666.

3405998997 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3405998997 - 2³⁰ = 2332257173 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 (3405998797) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1465678 + ... + 1467999.

It is an arithmetic number, because the mean of its divisors is an integer number (322704580).

Almost surely, 2^3405998997 is an apocalyptic number.

It is an amenable number.

3405998997 is a deficient number, since it is larger than the sum of its proper divisors (1757274283).

3405998997 is a wasteful number, since it uses less digits than its factorization.

3405998997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2933729 (or 2933723 counting only the distinct ones).

The product of its (nonzero) digits is 22044960, while the sum is 63.

The square root of 3405998997 is about 58360.9372525836. The cubic root of 3405998997 is about 1504.5784549484.

The spelling of 3405998997 in words is "three billion, four hundred five million, nine hundred ninety-eight thousand, nine hundred ninety-seven".