11399545 has 8 divisors (see below), whose sum is σ = 13751496. Its totient is φ = 9071616.

The previous prime is 11399539. The next prime is 11399551. The reversal of 11399545 is 54599311.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (11399539) and next prime (11399551).

It can be written as a sum of positive squares in 4 ways, for example, as 197136 + 11202409 = 444^2 + 3347^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11399545 - 2¹⁵ = 11366777 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4942 + ... + 6871.

It is an arithmetic number, because the mean of its divisors is an integer number (1718937).

Almost surely, 2^11399545 is an apocalyptic number.

It is an amenable number.

11399545 is a deficient number, since it is larger than the sum of its proper divisors (2351951).

11399545 is a wasteful number, since it uses less digits than its factorization.

11399545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12011.

The product of its digits is 24300, while the sum is 37.

The square root of 11399545 is about 3376.3212228696. The cubic root of 11399545 is about 225.0587171858.

The spelling of 11399545 in words is "eleven million, three hundred ninety-nine thousand, five hundred forty-five".