10391087 has 12 divisors (see below), whose sum is σ = 12171096. Its totient is φ = 8845200.

The previous prime is 10391071. The next prime is 10391093. The reversal of 10391087 is 78019301.

It is not a de Polignac number, because 10391087 - 2⁴ = 10391071 is a prime.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10391027) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7337 + ... + 8637.

It is an arithmetic number, because the mean of its divisors is an integer number (1014258).

Almost surely, 2^10391087 is an apocalyptic number.

10391087 is a deficient number, since it is larger than the sum of its proper divisors (1780009).

10391087 is a wasteful number, since it uses less digits than its factorization.

10391087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1478 (or 1471 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 29.

The square root of 10391087 is about 3223.5209011266. The cubic root of 10391087 is about 218.2162024776.

The spelling of 10391087 in words is "ten million, three hundred ninety-one thousand, eighty-seven".