249435941 has 4 divisors (see below), whose sum is σ = 249543084. Its totient is φ = 249328800.

The previous prime is 249435937. The next prime is 249435947. The reversal of 249435941 is 149534942.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10857025 + 238578916 = 3295^2 + 15446^2 .

It is a cyclic number.

It is not a de Polignac number, because 249435941 - 2² = 249435937 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249435947) 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, 50000 + ... + 54761.

It is an arithmetic number, because the mean of its divisors is an integer number (62385771).

Almost surely, 2^249435941 is an apocalyptic number.

It is an amenable number.

249435941 is a deficient number, since it is larger than the sum of its proper divisors (107143).

249435941 is a wasteful number, since it uses less digits than its factorization.

249435941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107142.

The product of its digits is 155520, while the sum is 41.

The square root of 249435941 is about 15793.5411165451. The cubic root of 249435941 is about 629.4863883087.

Subtracting from 249435941 its reverse (149534942), we obtain a palindrome (99900999).

The spelling of 249435941 in words is "two hundred forty-nine million, four hundred thirty-five thousand, nine hundred forty-one".