2400985 has 8 divisors (see below), whose sum is σ = 2890440. Its totient is φ = 1914624.

The previous prime is 2400971. The next prime is 2400989. The reversal of 2400985 is 5890042.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 123904 + 2277081 = 352^2 + 1509^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2400985 - 2⁹ = 2400473 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2400989) 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, 1611 + ... + 2719.

It is an arithmetic number, because the mean of its divisors is an integer number (361305).

2^2400985 is an apocalyptic number.

It is an amenable number.

2400985 is a deficient number, since it is larger than the sum of its proper divisors (489455).

2400985 is a wasteful number, since it uses less digits than its factorization.

2400985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1547.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 2400985 is about 1549.5112132540. The cubic root of 2400985 is about 133.9049039405.

The spelling of 2400985 in words is "two million, four hundred thousand, nine hundred eighty-five".