48437991 has 12 divisors (see below), whose sum is σ = 79961232. Its totient is φ = 27678816.

The previous prime is 48437989. The next prime is 48437999. The reversal of 48437991 is 19973484.

It is not a de Polignac number, because 48437991 - 2¹ = 48437989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (48437999) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 384366 + ... + 384491.

It is an arithmetic number, because the mean of its divisors is an integer number (6663436).

Almost surely, 2^48437991 is an apocalyptic number.

48437991 is a deficient number, since it is larger than the sum of its proper divisors (31523241).

48437991 is a wasteful number, since it uses less digits than its factorization.

48437991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 768870 (or 768867 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 48437991 is about 6959.7407279295. The cubic root of 48437991 is about 364.5261656548.

The spelling of 48437991 in words is "forty-eight million, four hundred thirty-seven thousand, nine hundred ninety-one".