3890540406 has 16 divisors (see below), whose sum is σ = 8238791664. Its totient is φ = 1220561664.

The previous prime is 3890540387. The next prime is 3890540441. The reversal of 3890540406 is 6040450983.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19071175 + ... + 19071378.

It is an arithmetic number, because the mean of its divisors is an integer number (514924479).

Almost surely, 2^3890540406 is an apocalyptic number.

3890540406 is an abundant number, since it is smaller than the sum of its proper divisors (4348251258).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3890540406 is a wasteful number, since it uses less digits than its factorization.

3890540406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38142575.

The product of its (nonzero) digits is 103680, while the sum is 39.

The square root of 3890540406 is about 62374.1966361091. The cubic root of 3890540406 is about 1572.7872386672.

The spelling of 3890540406 in words is "three billion, eight hundred ninety million, five hundred forty thousand, four hundred six".