46539991 has 2 divisors, whose sum is σ = 46539992. Its totient is φ = 46539990.

The previous prime is 46539979. The next prime is 46540019. The reversal of 46539991 is 19993564.

46539991 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 46539991 - 2¹³ = 46531799 is a 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 (46539901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23269995 + 23269996.

It is an arithmetic number, because the mean of its divisors is an integer number (23269996).

Almost surely, 2^46539991 is an apocalyptic number.

46539991 is a deficient number, since it is larger than the sum of its proper divisors (1).

46539991 is an equidigital number, since it uses as much as digits as its factorization.

46539991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 262440, while the sum is 46.

The square root of 46539991 is about 6822.0225006958. The cubic root of 46539991 is about 359.7013752978.

The spelling of 46539991 in words is "forty-six million, five hundred thirty-nine thousand, nine hundred ninety-one".