2409978 has 16 divisors (see below), whose sum is σ = 4932576. Its totient is φ = 784560.

The previous prime is 2409947. The next prime is 2409983. The reversal of 2409978 is 8799042.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4413 + ... + 4928.

It is an arithmetic number, because the mean of its divisors is an integer number (308286).

2^2409978 is an apocalyptic number.

2409978 is an abundant number, since it is smaller than the sum of its proper divisors (2522598).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2409978 is a wasteful number, since it uses less digits than its factorization.

2409978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9389.

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 2409978 is about 1552.4103838869. The cubic root of 2409978 is about 134.0718779743.

The spelling of 2409978 in words is "two million, four hundred nine thousand, nine hundred seventy-eight".