10291389 has 4 divisors (see below), whose sum is σ = 13721856. Its totient is φ = 6860924.

The previous prime is 10291361. The next prime is 10291399. The reversal of 10291389 is 98319201.

10291389 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10291389 - 2⁵ = 10291357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10291399) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1715229 + ... + 1715234.

It is an arithmetic number, because the mean of its divisors is an integer number (3430464).

Almost surely, 2^10291389 is an apocalyptic number.

It is an amenable number.

10291389 is a deficient number, since it is larger than the sum of its proper divisors (3430467).

10291389 is an equidigital number, since it uses as much as digits as its factorization.

10291389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3430466.

The product of its (nonzero) digits is 3888, while the sum is 33.

The square root of 10291389 is about 3208.0194824845. The cubic root of 10291389 is about 217.5160617020.

The spelling of 10291389 in words is "ten million, two hundred ninety-one thousand, three hundred eighty-nine".