249040605 has 32 divisors (see below), whose sum is σ = 435673728. Its totient is φ = 120473600.

The previous prime is 249040591. The next prime is 249040621. The reversal of 249040605 is 506040942.

It is not a de Polignac number, because 249040605 - 2⁸ = 249040349 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 84517 + ... + 87413.

It is an arithmetic number, because the mean of its divisors is an integer number (13614804).

Almost surely, 2^249040605 is an apocalyptic number.

It is an amenable number.

249040605 is a deficient number, since it is larger than the sum of its proper divisors (186633123).

249040605 is a wasteful number, since it uses less digits than its factorization.

249040605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3437.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 249040605 is about 15781.0204042704. The cubic root of 249040605 is about 629.1536506135.

The spelling of 249040605 in words is "two hundred forty-nine million, forty thousand, six hundred five".