46621987 has 2 divisors, whose sum is σ = 46621988. Its totient is φ = 46621986.

The previous prime is 46621963. The next prime is 46621999. The reversal of 46621987 is 78912664.

46621987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-46621987 is a prime.

It is not a weakly prime, because it can be changed into another prime (46621907) 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, 23310993 + 23310994.

It is an arithmetic number, because the mean of its divisors is an integer number (23310994).

Almost surely, 2^46621987 is an apocalyptic number.

46621987 is a deficient number, since it is larger than the sum of its proper divisors (1).

46621987 is an equidigital number, since it uses as much as digits as its factorization.

46621987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145152, while the sum is 43.

The square root of 46621987 is about 6828.0295107740. The cubic root of 46621987 is about 359.9124967369.

The spelling of 46621987 in words is "forty-six million, six hundred twenty-one thousand, nine hundred eighty-seven".