2406989 has 4 divisors (see below), whose sum is σ = 2592156. Its totient is φ = 2221824.

The previous prime is 2406983. The next prime is 2406991. The reversal of 2406989 is 9896042.

2406989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 432964 + 1974025 = 658^2 + 1405^2 .

It is a cyclic number.

It is not a de Polignac number, because 2406989 - 2¹⁶ = 2341453 is a prime.

It is a super-2 number, since 2×2406989² = 11587192092242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2406983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92564 + ... + 92589.

It is an arithmetic number, because the mean of its divisors is an integer number (648039).

2^2406989 is an apocalyptic number.

It is an amenable number.

2406989 is a deficient number, since it is larger than the sum of its proper divisors (185167).

2406989 is a wasteful number, since it uses less digits than its factorization.

2406989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185166.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 2406989 is about 1551.4473887309. The cubic root of 2406989 is about 134.0164270349.

The spelling of 2406989 in words is "two million, four hundred six thousand, nine hundred eighty-nine".