3890397 has 16 divisors (see below), whose sum is σ = 6027392. Its totient is φ = 2185920.

The previous prime is 3890387. The next prime is 3890417. The reversal of 3890397 is 7930983.

It is a happy number.

It is not a de Polignac number, because 3890397 - 2⁶ = 3890333 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3890317) 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, 238 + ... + 2799.

It is an arithmetic number, because the mean of its divisors is an integer number (376712).

Almost surely, 2^3890397 is an apocalyptic number.

It is an amenable number.

3890397 is a deficient number, since it is larger than the sum of its proper divisors (2136995).

3890397 is a wasteful number, since it uses less digits than its factorization.

3890397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3108.

The product of its (nonzero) digits is 40824, while the sum is 39.

The square root of 3890397 is about 1972.4089332590. The cubic root of 3890397 is about 157.2767914026.

The spelling of 3890397 in words is "three million, eight hundred ninety thousand, three hundred ninety-seven".