11399405 has 16 divisors (see below), whose sum is σ = 14027904. Its totient is φ = 8890560.

The previous prime is 11399389. The next prime is 11399471. The reversal of 11399405 is 50499311.

It is not a de Polignac number, because 11399405 - 2⁴ = 11399389 is a prime.

It is a super-3 number, since 3×11399405³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57767 + ... + 57963.

It is an arithmetic number, because the mean of its divisors is an integer number (876744).

Almost surely, 2^11399405 is an apocalyptic number.

It is an amenable number.

11399405 is a deficient number, since it is larger than the sum of its proper divisors (2628499).

11399405 is a wasteful number, since it uses less digits than its factorization.

11399405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436.

The product of its (nonzero) digits is 4860, while the sum is 32.

The square root of 11399405 is about 3376.3004901815. The cubic root of 11399405 is about 225.0577958523.

The spelling of 11399405 in words is "eleven million, three hundred ninety-nine thousand, four hundred five".