472989091 has 2 divisors, whose sum is σ = 472989092. Its totient is φ = 472989090.

The previous prime is 472989073. The next prime is 472989133. The reversal of 472989091 is 190989274.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 472989091 - 2¹⁷ = 472858019 is a prime.

It is not a weakly prime, because it can be changed into another prime (472989001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 236494545 + 236494546.

It is an arithmetic number, because the mean of its divisors is an integer number (236494546).

Almost surely, 2^472989091 is an apocalyptic number.

472989091 is a deficient number, since it is larger than the sum of its proper divisors (1).

472989091 is an equidigital number, since it uses as much as digits as its factorization.

472989091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 326592, while the sum is 49.

The square root of 472989091 is about 21748.3123713083. The cubic root of 472989091 is about 779.1427635716.

The spelling of 472989091 in words is "four hundred seventy-two million, nine hundred eighty-nine thousand, ninety-one".