249369005 has 8 divisors (see below), whose sum is σ = 316845432. Its totient is φ = 187760128.

The previous prime is 249368983. The next prime is 249369019. The reversal of 249369005 is 500963942.

It can be written as a sum of positive squares in 4 ways, for example, as 136095556 + 113273449 = 11666^2 + 10643^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 249369005 - 2¹⁰ = 249367981 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 249369005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1466792 + ... + 1466961.

It is an arithmetic number, because the mean of its divisors is an integer number (39605679).

Almost surely, 2^249369005 is an apocalyptic number.

It is an amenable number.

249369005 is a deficient number, since it is larger than the sum of its proper divisors (67476427).

249369005 is a wasteful number, since it uses less digits than its factorization.

249369005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2933775.

The product of its (nonzero) digits is 58320, while the sum is 38.

The square root of 249369005 is about 15791.4218802488. The cubic root of 249369005 is about 629.4300758272.

The spelling of 249369005 in words is "two hundred forty-nine million, three hundred sixty-nine thousand, five".