1398956473 has 2 divisors, whose sum is σ = 1398956474. Its totient is φ = 1398956472.

The previous prime is 1398956459. The next prime is 1398956479. The reversal of 1398956473 is 3746598931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1049565609 + 349390864 = 32397^2 + 18692^2 .

It is a cyclic number.

It is not a de Polignac number, because 1398956473 - 2⁵ = 1398956441 is a prime.

It is not a weakly prime, because it can be changed into another prime (1398956479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 699478236 + 699478237.

It is an arithmetic number, because the mean of its divisors is an integer number (699478237).

Almost surely, 2^1398956473 is an apocalyptic number.

It is an amenable number.

1398956473 is a deficient number, since it is larger than the sum of its proper divisors (1).

1398956473 is an equidigital number, since it uses as much as digits as its factorization.

1398956473 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4898880, while the sum is 55.

The square root of 1398956473 is about 37402.6265521554. The cubic root of 1398956473 is about 1118.4109248713.

The spelling of 1398956473 in words is "one billion, three hundred ninety-eight million, nine hundred fifty-six thousand, four hundred seventy-three".