103932991 has 4 divisors (see below), whose sum is σ = 106467984. Its totient is φ = 101398000.

The previous prime is 103932989. The next prime is 103933003. The reversal of 103932991 is 199239301.

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 103932991 - 2¹ = 103932989 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 103932991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103932931) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1267435 + ... + 1267516.

It is an arithmetic number, because the mean of its divisors is an integer number (26616996).

Almost surely, 2^103932991 is an apocalyptic number.

103932991 is a deficient number, since it is larger than the sum of its proper divisors (2534993).

103932991 is an equidigital number, since it uses as much as digits as its factorization.

103932991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2534992.

The product of its (nonzero) digits is 13122, while the sum is 37.

The square root of 103932991 is about 10194.7531112823. The cubic root of 103932991 is about 470.1659154686.

The spelling of 103932991 in words is "one hundred three million, nine hundred thirty-two thousand, nine hundred ninety-one".