39240261 has 8 divisors (see below), whose sum is σ = 58133760. Its totient is φ = 26160156.

The previous prime is 39240259. The next prime is 39240269. The reversal of 39240261 is 16204293.

It is not a de Polignac number, because 39240261 - 2¹ = 39240259 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 1453343 = 39240261 / (3 + 9 + 2 + 4 + 0 + 2 + 6 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39240269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 726645 + ... + 726698.

It is an arithmetic number, because the mean of its divisors is an integer number (7266720).

Almost surely, 2^39240261 is an apocalyptic number.

It is an amenable number.

39240261 is a deficient number, since it is larger than the sum of its proper divisors (18893499).

39240261 is a wasteful number, since it uses less digits than its factorization.

39240261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1453352 (or 1453346 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 39240261 is about 6264.2047380334. The cubic root of 39240261 is about 339.8161087483.

The spelling of 39240261 in words is "thirty-nine million, two hundred forty thousand, two hundred sixty-one".