472539091 has 4 divisors (see below), whose sum is σ = 472621384. Its totient is φ = 472456800.

The previous prime is 472539073. The next prime is 472539103. The reversal of 472539091 is 190935274.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 190935274 = 2 ⋅95467637.

It is a cyclic number.

It is not a de Polignac number, because 472539091 - 2¹³ = 472530899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (472509091) 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 in 3 ways as a sum of consecutive naturals, for example, 31830 + ... + 44251.

It is an arithmetic number, because the mean of its divisors is an integer number (118155346).

Almost surely, 2^472539091 is an apocalyptic number.

472539091 is a deficient number, since it is larger than the sum of its proper divisors (82293).

472539091 is an equidigital number, since it uses as much as digits as its factorization.

472539091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82292.

The product of its (nonzero) digits is 68040, while the sum is 40.

The square root of 472539091 is about 21737.9642791132. The cubic root of 472539091 is about 778.8955940279.

The spelling of 472539091 in words is "four hundred seventy-two million, five hundred thirty-nine thousand, ninety-one".