3890055 has 16 divisors (see below), whose sum is σ = 6703200. Its totient is φ = 1915008.

The previous prime is 3890053. The next prime is 3890057. The reversal of 3890055 is 5500983.

It is an interprime number because it is at equal distance from previous prime (3890053) and next prime (3890057).

It is not a de Polignac number, because 3890055 - 2¹ = 3890053 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3890053) 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, 9780 + ... + 10169.

It is an arithmetic number, because the mean of its divisors is an integer number (418950).

Almost surely, 2^3890055 is an apocalyptic number.

3890055 is a deficient number, since it is larger than the sum of its proper divisors (2813145).

3890055 is a wasteful number, since it uses less digits than its factorization.

3890055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19970.

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 3890055 is about 1972.3222353358. The cubic root of 3890055 is about 157.2721825979.

The spelling of 3890055 in words is "three million, eight hundred ninety thousand, fifty-five".