3561389 has 16 divisors (see below), whose sum is σ = 4109952. Its totient is φ = 3060288.

The previous prime is 3561377. The next prime is 3561391. The reversal of 3561389 is 9831653.

It is not a de Polignac number, because 3561389 - 2⁸ = 3561133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3561359) 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, 12719 + ... + 12995.

It is an arithmetic number, because the mean of its divisors is an integer number (256872).

Almost surely, 2^3561389 is an apocalyptic number.

It is an amenable number.

3561389 is a deficient number, since it is larger than the sum of its proper divisors (548563).

3561389 is a wasteful number, since it uses less digits than its factorization.

3561389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356.

The product of its digits is 19440, while the sum is 35.

The square root of 3561389 is about 1887.1642747784. The cubic root of 3561389 is about 152.7119904034.

The spelling of 3561389 in words is "three million, five hundred sixty-one thousand, three hundred eighty-nine".