249289390797 has 4 divisors (see below), whose sum is σ = 332385854400. Its totient is φ = 166192927196.

The previous prime is 249289390751. The next prime is 249289390813. The reversal of 249289390797 is 797093982942.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 249289390797 - 2⁶ = 249289390733 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249289310797) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41548231797 + ... + 41548231802.

It is an arithmetic number, because the mean of its divisors is an integer number (83096463600).

Almost surely, 2^249289390797 is an apocalyptic number.

It is an amenable number.

249289390797 is a deficient number, since it is larger than the sum of its proper divisors (83096463603).

249289390797 is an equidigital number, since it uses as much as digits as its factorization.

249289390797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83096463602.

The product of its (nonzero) digits is 123451776, while the sum is 69.

The spelling of 249289390797 in words is "two hundred forty-nine billion, two hundred eighty-nine million, three hundred ninety thousand, seven hundred ninety-seven".