2389690 has 16 divisors (see below), whose sum is σ = 4554792. Its totient is φ = 899584.

The previous prime is 2389669. The next prime is 2389693. The reversal of 2389690 is 969832.

It can be written as a sum of positive squares in 4 ways, for example, as 1585081 + 804609 = 1259^2 + 897^2 .

It is a super-2 number, since 2×2389690² = 11421236592200, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (2389693) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6859 + ... + 7198.

2^2389690 is an apocalyptic number.

2389690 is a deficient number, since it is larger than the sum of its proper divisors (2165102).

2389690 is a wasteful number, since it uses less digits than its factorization.

2389690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14081.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 2389690 is about 1545.8622189574. The cubic root of 2389690 is about 133.6945966709.

The spelling of 2389690 in words is "two million, three hundred eighty-nine thousand, six hundred ninety".