3858990 has 32 divisors (see below), whose sum is σ = 9313920. Its totient is φ = 1023264.

The previous prime is 3858971. The next prime is 3858991. The reversal of 3858990 is 998583.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3858991) 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, 9001 + ... + 9419.

It is an arithmetic number, because the mean of its divisors is an integer number (291060).

Almost surely, 2^3858990 is an apocalyptic number.

3858990 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

3858990 is an abundant number, since it is smaller than the sum of its proper divisors (5454930).

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

3858990 is a wasteful number, since it uses less digits than its factorization.

3858990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 736.

The product of its (nonzero) digits is 77760, while the sum is 42.

The square root of 3858990 is about 1964.4312153903. The cubic root of 3858990 is about 156.8524178751.

The spelling of 3858990 in words is "three million, eight hundred fifty-eight thousand, nine hundred ninety".