791398998 has 48 divisors (see below), whose sum is σ = 1915005456. Its totient is φ = 243505440.

The previous prime is 791398997. The next prime is 791399087. The reversal of 791398998 is 899893197.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (791398991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 56313 + ... + 68948.

It is an arithmetic number, because the mean of its divisors is an integer number (39895947).

Almost surely, 2^791398998 is an apocalyptic number.

791398998 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

791398998 is an abundant number, since it is smaller than the sum of its proper divisors (1123606458).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

791398998 is a wasteful number, since it uses less digits than its factorization.

791398998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125291 (or 125279 counting only the distinct ones).

The product of its digits is 8817984, while the sum is 63.

The square root of 791398998 is about 28131.8146943989. The cubic root of 791398998 is about 924.9789127893.

The spelling of 791398998 in words is "seven hundred ninety-one million, three hundred ninety-eight thousand, nine hundred ninety-eight".