476406991 has 2 divisors, whose sum is σ = 476406992. Its totient is φ = 476406990.

The previous prime is 476406967. The next prime is 476407013. The reversal of 476406991 is 199604674.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 476406991 - 2¹⁹ = 475882703 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (476406911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 238203495 + 238203496.

It is an arithmetic number, because the mean of its divisors is an integer number (238203496).

Almost surely, 2^476406991 is an apocalyptic number.

476406991 is a deficient number, since it is larger than the sum of its proper divisors (1).

476406991 is an equidigital number, since it uses as much as digits as its factorization.

476406991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 326592, while the sum is 46.

The square root of 476406991 is about 21826.7494373303. The cubic root of 476406991 is about 781.0150006710.

The spelling of 476406991 in words is "four hundred seventy-six million, four hundred six thousand, nine hundred ninety-one".