470407991 has 2 divisors, whose sum is σ = 470407992. Its totient is φ = 470407990.

The previous prime is 470407963. The next prime is 470407997. The reversal of 470407991 is 199704074.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 470407991 - 2¹⁰ = 470406967 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (470407997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 235203995 + 235203996.

It is an arithmetic number, because the mean of its divisors is an integer number (235203996).

Almost surely, 2^470407991 is an apocalyptic number.

470407991 is a deficient number, since it is larger than the sum of its proper divisors (1).

470407991 is an equidigital number, since it uses as much as digits as its factorization.

470407991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 63504, while the sum is 41.

The square root of 470407991 is about 21688.8909582763. The cubic root of 470407991 is about 777.7229178532.

The spelling of 470407991 in words is "four hundred seventy million, four hundred seven thousand, nine hundred ninety-one".