249964471 has 8 divisors (see below), whose sum is σ = 259096320. Its totient is φ = 240991608.

The previous prime is 249964469. The next prime is 249964493. The reversal of 249964471 is 174469942.

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 249964471 - 2¹ = 249964469 is a prime.

It is a super-3 number, since 3×249964471³ (a number of 26 digits) contains 333 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 (249964411) 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, 36541 + ... + 42838.

It is an arithmetic number, because the mean of its divisors is an integer number (32387040).

Almost surely, 2^249964471 is an apocalyptic number.

249964471 is a deficient number, since it is larger than the sum of its proper divisors (9131849).

249964471 is an equidigital number, since it uses as much as digits as its factorization.

249964471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79493.

The product of its digits is 435456, while the sum is 46.

The square root of 249964471 is about 15810.2647352914. The cubic root of 249964471 is about 629.9306810436.

The spelling of 249964471 in words is "two hundred forty-nine million, nine hundred sixty-four thousand, four hundred seventy-one".