1398269097 has 6 divisors (see below), whose sum is σ = 2019722042. Its totient is φ = 932179392.

The previous prime is 1398269087. The next prime is 1398269099. The reversal of 1398269097 is 7909628931.

It can be written as a sum of positive squares in only one way, i.e., 1397937321 + 331776 = 37389^2 + 576^2 .

It is not a de Polignac number, because 1398269097 - 2¹⁹ = 1397744809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1398269099) 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 5 ways as a sum of consecutive naturals, for example, 77681608 + ... + 77681625.

Almost surely, 2^1398269097 is an apocalyptic number.

It is an amenable number.

1398269097 is a deficient number, since it is larger than the sum of its proper divisors (621452945).

1398269097 is a wasteful number, since it uses less digits than its factorization.

1398269097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155363239 (or 155363236 counting only the distinct ones).

The product of its (nonzero) digits is 1469664, while the sum is 54.

The square root of 1398269097 is about 37393.4365497476. The cubic root of 1398269097 is about 1118.2277181292.

The spelling of 1398269097 in words is "one billion, three hundred ninety-eight million, two hundred sixty-nine thousand, ninety-seven".