249205430 has 8 divisors (see below), whose sum is σ = 448569792. Its totient is φ = 99682168.

The previous prime is 249205427. The next prime is 249205469. The reversal of 249205430 is 34502942.

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

It is a junction number, because it is equal to n+sod(n) for n = 249205393 and 249205402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12460262 + ... + 12460281.

It is an arithmetic number, because the mean of its divisors is an integer number (56071224).

Almost surely, 2^249205430 is an apocalyptic number.

249205430 is a deficient number, since it is larger than the sum of its proper divisors (199364362).

249205430 is a wasteful number, since it uses less digits than its factorization.

249205430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24920550.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 249205430 is about 15786.2417946768. The cubic root of 249205430 is about 629.2924196591.

The spelling of 249205430 in words is "two hundred forty-nine million, two hundred five thousand, four hundred thirty".