955139903 has 4 divisors (see below), whose sum is σ = 956683560. Its totient is φ = 953596248.

The previous prime is 955139893. The next prime is 955139923. The reversal of 955139903 is 309931559.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 955139903 - 2²² = 950945599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (955139923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 770900 + ... + 772137.

It is an arithmetic number, because the mean of its divisors is an integer number (239170890).

Almost surely, 2^955139903 is an apocalyptic number.

955139903 is a deficient number, since it is larger than the sum of its proper divisors (1543657).

955139903 is a wasteful number, since it uses less digits than its factorization.

955139903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1543656.

The product of its (nonzero) digits is 164025, while the sum is 44.

The square root of 955139903 is about 30905.3377752129. The cubic root of 955139903 is about 984.8172861468.

The spelling of 955139903 in words is "nine hundred fifty-five million, one hundred thirty-nine thousand, nine hundred three".