249020403 has 32 divisors (see below), whose sum is σ = 374860800. Its totient is φ = 146105856.

The previous prime is 249020399. The next prime is 249020413. The reversal of 249020403 is 304020942.

It is a happy number.

It is not a de Polignac number, because 249020403 - 2² = 249020399 is a prime.

It is a super-2 number, since 2×249020403² = 124022322220564818, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (249020413) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 74925 + ... + 78177.

It is an arithmetic number, because the mean of its divisors is an integer number (11714400).

Almost surely, 2^249020403 is an apocalyptic number.

249020403 is a deficient number, since it is larger than the sum of its proper divisors (125840397).

249020403 is a wasteful number, since it uses less digits than its factorization.

249020403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3371.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 249020403 is about 15780.3803186108. The cubic root of 249020403 is about 629.1366379852.

The spelling of 249020403 in words is "two hundred forty-nine million, twenty thousand, four hundred three".