3401778406 has 16 divisors (see below), whose sum is σ = 5561391024. Its totient is φ = 1551134304.

The previous prime is 3401778403. The next prime is 3401778427. The reversal of 3401778406 is 6048771043.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3401778403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 786021 + ... + 790336.

It is an arithmetic number, because the mean of its divisors is an integer number (347586939).

Almost surely, 2^3401778406 is an apocalyptic number.

3401778406 is a deficient number, since it is larger than the sum of its proper divisors (2159612618).

3401778406 is a wasteful number, since it uses less digits than its factorization.

3401778406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1576455.

The product of its (nonzero) digits is 112896, while the sum is 40.

The square root of 3401778406 is about 58324.7666604848. The cubic root of 3401778406 is about 1503.9567249672.

The spelling of 3401778406 in words is "three billion, four hundred one million, seven hundred seventy-eight thousand, four hundred six".