249303381 has 8 divisors (see below), whose sum is σ = 336612480. Its totient is φ = 164098272.

The previous prime is 249303359. The next prime is 249303391. The reversal of 249303381 is 183303942.

It is a happy number.

249303381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 249303381 - 2⁷ = 249303253 is a prime.

It is a super-2 number, since 2×249303381² = 124304351556062322, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249303331) 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, 525720 + ... + 526193.

It is an arithmetic number, because the mean of its divisors is an integer number (42076560).

Almost surely, 2^249303381 is an apocalyptic number.

It is an amenable number.

249303381 is a deficient number, since it is larger than the sum of its proper divisors (87309099).

249303381 is a wasteful number, since it uses less digits than its factorization.

249303381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1051995.

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 249303381 is about 15789.3439065719. The cubic root of 249303381 is about 629.3748573326.

The spelling of 249303381 in words is "two hundred forty-nine million, three hundred three thousand, three hundred eighty-one".