249862019044 has 27 divisors (see below), whose sum is σ = 480644170153. Its totient is φ = 113568646400.

The previous prime is 249862019041. The next prime is 249862019083. The reversal of 249862019044 is 440910268942.

It is a happy number.

The square root of 249862019044 is 499862.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 98572137444 + 151289881600 = 313962^2 + 388960^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (249862019041) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 10985604 + ... + 11008324.

Almost surely, 2^249862019044 is an apocalyptic number.

249862019044 is the 499862-nd square number.

It is an amenable number.

249862019044 is a deficient number, since it is larger than the sum of its proper divisors (230782151109).

249862019044 is an frugal number, since it uses more digits than its factorization.

249862019044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45468 (or 22734 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 49.

Multiplying 249862019044 by its sum of digits (49), we get a square (12243238933156 = 3499034²).

The spelling of 249862019044 in words is "two hundred forty-nine billion, eight hundred sixty-two million, nineteen thousand, forty-four".