2479440 has 40 divisors (see below), whose sum is σ = 7687008. Its totient is φ = 661120.

The previous prime is 2479429. The next prime is 2479453. The reversal of 2479440 is 449742.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×2479440² = 12295245427200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 2479398 and 2479407.

It is a congruent number.

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, 4926 + ... + 5405.

2^2479440 is an apocalyptic number.

2479440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2479440 is an abundant number, since it is smaller than the sum of its proper divisors (5207568).

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

2479440 is a wasteful number, since it uses less digits than its factorization.

2479440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10347 (or 10341 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 2479440 is about 1574.6237645863. The cubic root of 2479440 is about 135.3478000395.

The spelling of 2479440 in words is "two million, four hundred seventy-nine thousand, four hundred forty".