46218989 has 2 divisors, whose sum is σ = 46218990. Its totient is φ = 46218988.

The previous prime is 46218973. The next prime is 46219037. The reversal of 46218989 is 98981264.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28536964 + 17682025 = 5342^2 + 4205^2 .

It is a cyclic number.

It is not a de Polignac number, because 46218989 - 2⁴ = 46218973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (46218919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23109494 + 23109495.

It is an arithmetic number, because the mean of its divisors is an integer number (23109495).

Almost surely, 2^46218989 is an apocalyptic number.

It is an amenable number.

46218989 is a deficient number, since it is larger than the sum of its proper divisors (1).

46218989 is an equidigital number, since it uses as much as digits as its factorization.

46218989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 248832, while the sum is 47.

The square root of 46218989 is about 6798.4548979897. The cubic root of 46218989 is about 358.8724727633.

The spelling of 46218989 in words is "forty-six million, two hundred eighteen thousand, nine hundred eighty-nine".