249434341891 has 8 divisors (see below), whose sum is σ = 285996381440. Its totient is φ = 213104442888.

The previous prime is 249434341859. The next prime is 249434341903. The reversal of 249434341891 is 198143434942.

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 249434341891 - 2⁵ = 249434341859 is a prime.

It is not an unprimeable number, because it can be changed into a prime (249434345891) 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, 58032831 + ... + 58037128.

It is an arithmetic number, because the mean of its divisors is an integer number (35749547680).

Almost surely, 2^249434341891 is an apocalyptic number.

249434341891 is a deficient number, since it is larger than the sum of its proper divisors (36562039549).

249434341891 is a wasteful number, since it uses less digits than its factorization.

249434341891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116070273.

The product of its digits is 2985984, while the sum is 52.

The spelling of 249434341891 in words is "two hundred forty-nine billion, four hundred thirty-four million, three hundred forty-one thousand, eight hundred ninety-one".