59438991 has 4 divisors (see below), whose sum is σ = 79251992. Its totient is φ = 39625992.

The previous prime is 59438989. The next prime is 59438993. The reversal of 59438991 is 19983495.

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

It is an interprime number because it is at equal distance from previous prime (59438989) and next prime (59438993).

It is not a de Polignac number, because 59438991 - 2¹ = 59438989 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 59438991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (59438993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9906496 + ... + 9906501.

It is an arithmetic number, because the mean of its divisors is an integer number (19812998).

Almost surely, 2^59438991 is an apocalyptic number.

59438991 is a deficient number, since it is larger than the sum of its proper divisors (19813001).

59438991 is a wasteful number, since it uses less digits than its factorization.

59438991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19813000.

The product of its digits is 349920, while the sum is 48.

The square root of 59438991 is about 7709.6686699235. The cubic root of 59438991 is about 390.2627880441.

The spelling of 59438991 in words is "fifty-nine million, four hundred thirty-eight thousand, nine hundred ninety-one".