249653983 has 8 divisors (see below), whose sum is σ = 263808000. Its totient is φ = 235774968.

The previous prime is 249653969. The next prime is 249654017. The reversal of 249653983 is 389356942.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 249653983 - 2⁹ = 249653471 is a prime.

It is a super-2 number, since 2×249653983² = 124654222455528578, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249653923) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66883 + ... + 70516.

It is an arithmetic number, because the mean of its divisors is an integer number (32976000).

Almost surely, 2^249653983 is an apocalyptic number.

249653983 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

249653983 is a deficient number, since it is larger than the sum of its proper divisors (14154017).

249653983 is a wasteful number, since it uses less digits than its factorization.

249653983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137501.

The product of its digits is 1399680, while the sum is 49.

The square root of 249653983 is about 15800.4424938038. The cubic root of 249653983 is about 629.6697546896.

The spelling of 249653983 in words is "two hundred forty-nine million, six hundred fifty-three thousand, nine hundred eighty-three".