998966951 has 2 divisors, whose sum is σ = 998966952. Its totient is φ = 998966950.

The previous prime is 998966921. The next prime is 998966957. The reversal of 998966951 is 159669899.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-998966951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (998966957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499483475 + 499483476.

It is an arithmetic number, because the mean of its divisors is an integer number (499483476).

Almost surely, 2^998966951 is an apocalyptic number.

998966951 is a deficient number, since it is larger than the sum of its proper divisors (1).

998966951 is an equidigital number, since it uses as much as digits as its factorization.

998966951 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9447840, while the sum is 62.

The square root of 998966951 is about 31606.4384421909. The cubic root of 998966951 is about 999.6555316885.

The spelling of 998966951 in words is "nine hundred ninety-eight million, nine hundred sixty-six thousand, nine hundred fifty-one".