10388491 has 2 divisors, whose sum is σ = 10388492. Its totient is φ = 10388490.

The previous prime is 10388489. The next prime is 10388501. The reversal of 10388491 is 19488301.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10388491 - 2¹ = 10388489 is a prime.

Together with 10388489, it forms a pair of twin primes.

It is a nialpdrome in base 15.

It is not a weakly prime, because it can be changed into another prime (10388461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5194245 + 5194246.

It is an arithmetic number, because the mean of its divisors is an integer number (5194246).

Almost surely, 2^10388491 is an apocalyptic number.

10388491 is a deficient number, since it is larger than the sum of its proper divisors (1).

10388491 is an equidigital number, since it uses as much as digits as its factorization.

10388491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 10388491 is about 3223.1182106774. The cubic root of 10388491 is about 218.1980286830.

The spelling of 10388491 in words is "ten million, three hundred eighty-eight thousand, four hundred ninety-one".