998413951 has 4 divisors (see below), whose sum is σ = 999489600. Its totient is φ = 997338304.

The previous prime is 998413939. The next prime is 998413981. The reversal of 998413951 is 159314899.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 998413951 - 2¹⁵ = 998381183 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 998413895 and 998413904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (998413981) 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, 536431 + ... + 538288.

It is an arithmetic number, because the mean of its divisors is an integer number (249872400).

Almost surely, 2^998413951 is an apocalyptic number.

998413951 is a deficient number, since it is larger than the sum of its proper divisors (1075649).

998413951 is a wasteful number, since it uses less digits than its factorization.

998413951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1075648.

The product of its digits is 349920, while the sum is 49.

The square root of 998413951 is about 31597.6890135972. The cubic root of 998413951 is about 999.4710372477.

The spelling of 998413951 in words is "nine hundred ninety-eight million, four hundred thirteen thousand, nine hundred fifty-one".