2403399 has 16 divisors (see below), whose sum is σ = 3390464. Its totient is φ = 1512000.

The previous prime is 2403389. The next prime is 2403403. The reversal of 2403399 is 9933042.

It is not a de Polignac number, because 2403399 - 2⁴ = 2403383 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2403319) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3699 + ... + 4299.

It is an arithmetic number, because the mean of its divisors is an integer number (211904).

2^2403399 is an apocalyptic number.

2403399 is a deficient number, since it is larger than the sum of its proper divisors (987065).

2403399 is a wasteful number, since it uses less digits than its factorization.

2403399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 678.

The product of its (nonzero) digits is 5832, while the sum is 30.

The square root of 2403399 is about 1550.2899728760. The cubic root of 2403399 is about 133.9497658293.

The spelling of 2403399 in words is "two million, four hundred three thousand, three hundred ninety-nine".