265940947 has 4 divisors (see below), whose sum is σ = 267410416. Its totient is φ = 264471480.

The previous prime is 265940897. The next prime is 265940959. The reversal of 265940947 is 749049562.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 749049562 = 2 ⋅374524781.

It is a cyclic number.

It is not a de Polignac number, because 265940947 - 2⁷ = 265940819 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 265940897 and 265940906.

It is not an unprimeable number, because it can be changed into a prime (265940447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 734463 + ... + 734824.

It is an arithmetic number, because the mean of its divisors is an integer number (66852604).

Almost surely, 2^265940947 is an apocalyptic number.

265940947 is a deficient number, since it is larger than the sum of its proper divisors (1469469).

265940947 is a wasteful number, since it uses less digits than its factorization.

265940947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1469468.

The product of its (nonzero) digits is 544320, while the sum is 46.

The square root of 265940947 is about 16307.6959439401. The cubic root of 265940947 is about 643.0751637256.

The spelling of 265940947 in words is "two hundred sixty-five million, nine hundred forty thousand, nine hundred forty-seven".