46997989 has 4 divisors (see below), whose sum is σ = 47082924. Its totient is φ = 46913056.

The previous prime is 46997983. The next prime is 46998037. The reversal of 46997989 is 98979964.

46997989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 20629764 + 26368225 = 4542^2 + 5135^2 .

It is a cyclic number.

It is not a de Polignac number, because 46997989 - 2⁷ = 46997861 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 (46997983) 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 in 3 ways as a sum of consecutive naturals, for example, 41632 + ... + 42745.

It is an arithmetic number, because the mean of its divisors is an integer number (11770731).

Almost surely, 2^46997989 is an apocalyptic number.

It is an amenable number.

46997989 is a deficient number, since it is larger than the sum of its proper divisors (84935).

46997989 is an equidigital number, since it uses as much as digits as its factorization.

46997989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84934.

The product of its digits is 8817984, while the sum is 61.

The square root of 46997989 is about 6855.5079315832. The cubic root of 46997989 is about 360.8774608843.

The spelling of 46997989 in words is "forty-six million, nine hundred ninety-seven thousand, nine hundred eighty-nine".