249999673 has 48 divisors (see below), whose sum is σ = 336768768. Its totient is φ = 181209600.

The previous prime is 249999667. The next prime is 249999679. The reversal of 249999673 is 376999942.

It is an interprime number because it is at equal distance from previous prime (249999667) and next prime (249999679).

It is not a de Polignac number, because 249999673 - 2⁵ = 249999641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (249999679) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 798565 + ... + 798877.

It is an arithmetic number, because the mean of its divisors is an integer number (7016016).

Almost surely, 2^249999673 is an apocalyptic number.

249999673 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

249999673 is a deficient number, since it is larger than the sum of its proper divisors (86769095).

249999673 is a wasteful number, since it uses less digits than its factorization.

249999673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406 (or 395 counting only the distinct ones).

The product of its digits is 6613488, while the sum is 58.

The square root of 249999673 is about 15811.3779601906. The cubic root of 249999673 is about 629.9602502845.

The spelling of 249999673 in words is "two hundred forty-nine million, nine hundred ninety-nine thousand, six hundred seventy-three".