249807073 has 8 divisors (see below), whose sum is σ = 263298600. Its totient is φ = 236640768.

The previous prime is 249807067. The next prime is 249807101. The reversal of 249807073 is 370708942.

249807073 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 65173329 + 184633744 = 8073^2 + 13588^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-249807073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (249807023) 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, 79728 + ... + 82801.

It is an arithmetic number, because the mean of its divisors is an integer number (32912325).

Almost surely, 2^249807073 is an apocalyptic number.

It is an amenable number.

249807073 is a deficient number, since it is larger than the sum of its proper divisors (13491527).

249807073 is a wasteful number, since it uses less digits than its factorization.

249807073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162611.

The product of its (nonzero) digits is 84672, while the sum is 40.

The square root of 249807073 is about 15805.2862359402. The cubic root of 249807073 is about 629.7984347192.

The spelling of 249807073 in words is "two hundred forty-nine million, eight hundred seven thousand, seventy-three".