2493905 has 4 divisors (see below), whose sum is σ = 2992692. Its totient is φ = 1995120.

The previous prime is 2493877. The next prime is 2493923. The reversal of 2493905 is 5093942.

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 1203409 + 1290496 = 1097^2 + 1136^2 .

It is not a de Polignac number, because 2493905 - 2¹⁴ = 2477521 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 249386 + ... + 249395.

It is an arithmetic number, because the mean of its divisors is an integer number (748173).

2^2493905 is an apocalyptic number.

It is an amenable number.

2493905 is a deficient number, since it is larger than the sum of its proper divisors (498787).

2493905 is an equidigital number, since it uses as much as digits as its factorization.

2493905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498786.

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 2493905 is about 1579.2102456608. The cubic root of 2493905 is about 135.6104952386.

The spelling of 2493905 in words is "two million, four hundred ninety-three thousand, nine hundred five".