798148987 has 2 divisors, whose sum is σ = 798148988. Its totient is φ = 798148986.

The previous prime is 798148969. The next prime is 798148993. The reversal of 798148987 is 789841897.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 798148987 - 2⁷ = 798148859 is a prime.

It is not a weakly prime, because it can be changed into another prime (798148937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 399074493 + 399074494.

It is an arithmetic number, because the mean of its divisors is an integer number (399074494).

Almost surely, 2^798148987 is an apocalyptic number.

798148987 is a deficient number, since it is larger than the sum of its proper divisors (1).

798148987 is an equidigital number, since it uses as much as digits as its factorization.

798148987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8128512, while the sum is 61.

The square root of 798148987 is about 28251.5307018930. The cubic root of 798148987 is about 927.6012437099.

The spelling of 798148987 in words is "seven hundred ninety-eight million, one hundred forty-eight thousand, nine hundred eighty-seven".