286977961 has 2 divisors, whose sum is σ = 286977962. Its totient is φ = 286977960.

The previous prime is 286977937. The next prime is 286977967. The reversal of 286977961 is 169779682.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 205635600 + 81342361 = 14340^2 + 9019^2 .

It is a cyclic number.

It is not a de Polignac number, because 286977961 - 2¹³ = 286969769 is a prime.

It is not a weakly prime, because it can be changed into another prime (286977967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 143488980 + 143488981.

It is an arithmetic number, because the mean of its divisors is an integer number (143488981).

Almost surely, 2^286977961 is an apocalyptic number.

It is an amenable number.

286977961 is a deficient number, since it is larger than the sum of its proper divisors (1).

286977961 is an equidigital number, since it uses as much as digits as its factorization.

286977961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2286144, while the sum is 55.

The square root of 286977961 is about 16940.4238730913. The cubic root of 286977961 is about 659.6033436920.

The spelling of 286977961 in words is "two hundred eighty-six million, nine hundred seventy-seven thousand, nine hundred sixty-one".