260978947 has 2 divisors, whose sum is σ = 260978948. Its totient is φ = 260978946.

The previous prime is 260978929. The next prime is 260978959. The reversal of 260978947 is 749879062.

260978947 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 260978947 - 2¹¹ = 260976899 is a prime.

It is a super-2 number, since 2×260978947² = 136220021554457618, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 260978894 and 260978903.

It is not a weakly prime, because it can be changed into another prime (260978147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130489473 + 130489474.

It is an arithmetic number, because the mean of its divisors is an integer number (130489474).

Almost surely, 2^260978947 is an apocalyptic number.

260978947 is a deficient number, since it is larger than the sum of its proper divisors (1).

260978947 is an equidigital number, since it uses as much as digits as its factorization.

260978947 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1524096, while the sum is 52.

The square root of 260978947 is about 16154.8428342711. The cubic root of 260978947 is about 639.0504693750.

The spelling of 260978947 in words is "two hundred sixty million, nine hundred seventy-eight thousand, nine hundred forty-seven".