2478403 has 2 divisors, whose sum is σ = 2478404. Its totient is φ = 2478402.

The previous prime is 2478373. The next prime is 2478407. The reversal of 2478403 is 3048742.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2478403 is a prime.

It is a super-2 number, since 2×2478403² = 12284962860818, which contains 22 as substring.

2478403 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (2478407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1239201 + 1239202.

It is an arithmetic number, because the mean of its divisors is an integer number (1239202).

2^2478403 is an apocalyptic number.

2478403 is a deficient number, since it is larger than the sum of its proper divisors (1).

2478403 is an equidigital number, since it uses as much as digits as its factorization.

2478403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 2478403 is about 1574.2944451404. The cubic root of 2478403 is about 135.3289281382.

The spelling of 2478403 in words is "two million, four hundred seventy-eight thousand, four hundred three".