998946951 has 4 divisors (see below), whose sum is σ = 1331929272. Its totient is φ = 665964632.

The previous prime is 998946937. The next prime is 998946961. The reversal of 998946951 is 159649899.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 159649899 = 3 ⋅53216633.

It is a cyclic number.

It is not a de Polignac number, because 998946951 - 2⁶ = 998946887 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (998946901) 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, 166491156 + ... + 166491161.

It is an arithmetic number, because the mean of its divisors is an integer number (332982318).

Almost surely, 2^998946951 is an apocalyptic number.

998946951 is a deficient number, since it is larger than the sum of its proper divisors (332982321).

998946951 is a wasteful number, since it uses less digits than its factorization.

998946951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332982320.

The product of its digits is 6298560, while the sum is 60.

The square root of 998946951 is about 31606.1220493752. The cubic root of 998946951 is about 999.6488603821.

The spelling of 998946951 in words is "nine hundred ninety-eight million, nine hundred forty-six thousand, nine hundred fifty-one".