12903955 has 4 divisors (see below), whose sum is σ = 15484752. Its totient is φ = 10323160.

The previous prime is 12903941. The next prime is 12903959. The reversal of 12903955 is 55930921.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55930921 = 73 ⋅766177.

It is not a de Polignac number, because 12903955 - 2¹³ = 12895763 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12903955.

It is not an unprimeable number, because it can be changed into a prime (12903959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1290391 + ... + 1290400.

It is an arithmetic number, because the mean of its divisors is an integer number (3871188).

Almost surely, 2^12903955 is an apocalyptic number.

12903955 is a deficient number, since it is larger than the sum of its proper divisors (2580797).

12903955 is an equidigital number, since it uses as much as digits as its factorization.

12903955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2580796.

The product of its (nonzero) digits is 12150, while the sum is 34.

The square root of 12903955 is about 3592.2075385478. The cubic root of 12903955 is about 234.5529754550.

The spelling of 12903955 in words is "twelve million, nine hundred three thousand, nine hundred fifty-five".