3890557 has 4 divisors (see below), whose sum is σ = 4244256. Its totient is φ = 3536860.

The previous prime is 3890543. The next prime is 3890561. The reversal of 3890557 is 7550983.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7550983 = 11 ⋅686453.

It is a cyclic number.

It is not a de Polignac number, because 3890557 - 2⁷ = 3890429 is a prime.

It is a Duffinian number.

3890557 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3890507) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 176833 + ... + 176854.

It is an arithmetic number, because the mean of its divisors is an integer number (1061064).

Almost surely, 2^3890557 is an apocalyptic number.

It is an amenable number.

3890557 is a deficient number, since it is larger than the sum of its proper divisors (353699).

3890557 is a wasteful number, since it uses less digits than its factorization.

3890557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353698.

The product of its (nonzero) digits is 37800, while the sum is 37.

The square root of 3890557 is about 1972.4494923825. The cubic root of 3890557 is about 157.2789474757.

The spelling of 3890557 in words is "three million, eight hundred ninety thousand, five hundred fifty-seven".