12405955 has 8 divisors (see below), whose sum is σ = 15670800. Its totient is φ = 9402336.

The previous prime is 12405949. The next prime is 12405961. The reversal of 12405955 is 55950421.

It is an interprime number because it is at equal distance from previous prime (12405949) and next prime (12405961).

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 12405955 - 2¹⁵ = 12373187 is a prime.

It is a super-4 number, since 4×12405955⁴ (a number of 29 digits) contains 4444 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65200 + ... + 65389.

It is an arithmetic number, because the mean of its divisors is an integer number (1958850).

Almost surely, 2^12405955 is an apocalyptic number.

12405955 is a deficient number, since it is larger than the sum of its proper divisors (3264845).

12405955 is a wasteful number, since it uses less digits than its factorization.

12405955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130613.

The product of its (nonzero) digits is 9000, while the sum is 31.

The square root of 12405955 is about 3522.2088240194. The cubic root of 12405955 is about 231.4959516138.

The spelling of 12405955 in words is "twelve million, four hundred five thousand, nine hundred fifty-five".