986410721 has 2 divisors, whose sum is σ = 986410722. Its totient is φ = 986410720.

The previous prime is 986410697. The next prime is 986410753. The reversal of 986410721 is 127014689.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 748788496 + 237622225 = 27364^2 + 15415^2 .

It is a cyclic number.

It is not a de Polignac number, because 986410721 - 2⁶ = 986410657 is a prime.

It is a super-2 number, since 2×986410721² = 1946012221007479682, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (986410921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 493205360 + 493205361.

It is an arithmetic number, because the mean of its divisors is an integer number (493205361).

Almost surely, 2^986410721 is an apocalyptic number.

It is an amenable number.

986410721 is a deficient number, since it is larger than the sum of its proper divisors (1).

986410721 is an equidigital number, since it uses as much as digits as its factorization.

986410721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 986410721 is about 31407.1762659428. The cubic root of 986410721 is about 995.4495652850.

The spelling of 986410721 in words is "nine hundred eighty-six million, four hundred ten thousand, seven hundred twenty-one".