46091989 has 2 divisors, whose sum is σ = 46091990. Its totient is φ = 46091988.

The previous prime is 46091971. The next prime is 46092017. The reversal of 46091989 is 98919064.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42797764 + 3294225 = 6542^2 + 1815^2 .

It is a cyclic number.

It is not a de Polignac number, because 46091989 - 2²³ = 37703381 is a prime.

It is a super-2 number, since 2×46091989² = 4248942899952242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (46091939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23045994 + 23045995.

It is an arithmetic number, because the mean of its divisors is an integer number (23045995).

Almost surely, 2^46091989 is an apocalyptic number.

It is an amenable number.

46091989 is a deficient number, since it is larger than the sum of its proper divisors (1).

46091989 is an equidigital number, since it uses as much as digits as its factorization.

46091989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 139968, while the sum is 46.

The square root of 46091989 is about 6789.1081152092. The cubic root of 46091989 is about 358.5434693673.

The spelling of 46091989 in words is "forty-six million, ninety-one thousand, nine hundred eighty-nine".