698227939 has 2 divisors, whose sum is σ = 698227940. Its totient is φ = 698227938.

The previous prime is 698227891. The next prime is 698227963. The reversal of 698227939 is 939722896.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 698227939 - 2¹⁹ = 697703651 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 698227939.

It is not a weakly prime, because it can be changed into another prime (698227969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 349113969 + 349113970.

It is an arithmetic number, because the mean of its divisors is an integer number (349113970).

Almost surely, 2^698227939 is an apocalyptic number.

698227939 is a deficient number, since it is larger than the sum of its proper divisors (1).

698227939 is an equidigital number, since it uses as much as digits as its factorization.

698227939 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2939328, while the sum is 55.

The square root of 698227939 is about 26424.0030843171. The cubic root of 698227939 is about 887.1541209635.

The spelling of 698227939 in words is "six hundred ninety-eight million, two hundred twenty-seven thousand, nine hundred thirty-nine".