100389397 has 2 divisors, whose sum is σ = 100389398. Its totient is φ = 100389396.

The previous prime is 100389379. The next prime is 100389449. The reversal of 100389397 is 793983001.

Together with previous prime (100389379) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 100120036 + 269361 = 10006^2 + 519^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100389397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100389337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50194698 + 50194699.

It is an arithmetic number, because the mean of its divisors is an integer number (50194699).

Almost surely, 2^100389397 is an apocalyptic number.

It is an amenable number.

100389397 is a deficient number, since it is larger than the sum of its proper divisors (1).

100389397 is an equidigital number, since it uses as much as digits as its factorization.

100389397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40824, while the sum is 40.

The square root of 100389397 is about 10019.4509330602. The cubic root of 100389397 is about 464.7605766329.

The spelling of 100389397 in words is "one hundred million, three hundred eighty-nine thousand, three hundred ninety-seven".