48400991 has 2 divisors, whose sum is σ = 48400992. Its totient is φ = 48400990.

The previous prime is 48400981. The next prime is 48401027. The reversal of 48400991 is 19900484.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 48400991 - 2¹⁴ = 48384607 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (48400981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24200495 + 24200496.

It is an arithmetic number, because the mean of its divisors is an integer number (24200496).

Almost surely, 2^48400991 is an apocalyptic number.

48400991 is a deficient number, since it is larger than the sum of its proper divisors (1).

48400991 is an equidigital number, since it uses as much as digits as its factorization.

48400991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 48400991 is about 6957.0820751232. The cubic root of 48400991 is about 364.4333259678.

The spelling of 48400991 in words is "forty-eight million, four hundred thousand, nine hundred ninety-one".