249905433 has 8 divisors (see below), whose sum is σ = 335048896. Its totient is φ = 165682800.

The previous prime is 249905431. The next prime is 249905443. The reversal of 249905433 is 334509942.

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

It is not a de Polignac number, because 249905433 - 2¹ = 249905431 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 249905391 and 249905400.

It is not an unprimeable number, because it can be changed into a prime (249905431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 229573 + ... + 230658.

It is an arithmetic number, because the mean of its divisors is an integer number (41881112).

Almost surely, 2^249905433 is an apocalyptic number.

It is an amenable number.

249905433 is a deficient number, since it is larger than the sum of its proper divisors (85143463).

249905433 is a wasteful number, since it uses less digits than its factorization.

249905433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460415.

The product of its (nonzero) digits is 116640, while the sum is 39.

The square root of 249905433 is about 15808.3975468736. The cubic root of 249905433 is about 629.8810836273.

The spelling of 249905433 in words is "two hundred forty-nine million, nine hundred five thousand, four hundred thirty-three".