11397915 has 56 divisors (see below), whose sum is σ = 21247920. Its totient is φ = 5863104.

The previous prime is 11397913. The next prime is 11397931. The reversal of 11397915 is 51979311.

It is not a de Polignac number, because 11397915 - 2¹ = 11397913 is a prime.

Its product of digits (8505) is a multiple of the sum of its prime factors (135).

It is a self number, because there is not a number n which added to its sum of digits gives 11397915.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11397913) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 193156 + ... + 193214.

Almost surely, 2^11397915 is an apocalyptic number.

11397915 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11397915 is a deficient number, since it is larger than the sum of its proper divisors (9850005).

11397915 is an frugal number, since it uses more digits than its factorization.

11397915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135 (or 120 counting only the distinct ones).

The product of its digits is 8505, while the sum is 36.

The square root of 11397915 is about 3376.0798272553. The cubic root of 11397915 is about 225.0479897636.

The spelling of 11397915 in words is "eleven million, three hundred ninety-seven thousand, nine hundred fifteen".