249640601 has 16 divisors (see below), whose sum is σ = 300873600. Its totient is φ = 202341888.

The previous prime is 249640561. The next prime is 249640621. The reversal of 249640601 is 106046942.

It is a happy number.

It is not a de Polignac number, because 249640601 - 2⁶ = 249640537 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (249640621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 88115 + ... + 90903.

It is an arithmetic number, because the mean of its divisors is an integer number (18804600).

Almost surely, 2^249640601 is an apocalyptic number.

It is an amenable number.

249640601 is a deficient number, since it is larger than the sum of its proper divisors (51232999).

249640601 is a wasteful number, since it uses less digits than its factorization.

249640601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3488.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 249640601 is about 15800.0190189759. The cubic root of 249640601 is about 629.6585039295.

The spelling of 249640601 in words is "two hundred forty-nine million, six hundred forty thousand, six hundred one".