48991837 has 4 divisors (see below), whose sum is σ = 49006396. Its totient is φ = 48977280.

The previous prime is 48991819. The next prime is 48991849. The reversal of 48991837 is 73819984.

It is a happy number.

It is the 2858-th star number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 22838841 + 26152996 = 4779^2 + 5114^2 .

It is a cyclic number.

It is not a de Polignac number, because 48991837 - 2²³ = 40603229 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 (48991867) 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, 643 + ... + 9919.

It is an arithmetic number, because the mean of its divisors is an integer number (12251599).

Almost surely, 2^48991837 is an apocalyptic number.

It is an amenable number.

48991837 is a deficient number, since it is larger than the sum of its proper divisors (14559).

48991837 is an equidigital number, since it uses as much as digits as its factorization.

48991837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14558.

The product of its digits is 435456, while the sum is 49.

The square root of 48991837 is about 6999.4169042857. The cubic root of 48991837 is about 365.9102495251.

The spelling of 48991837 in words is "forty-eight million, nine hundred ninety-one thousand, eight hundred thirty-seven".