477479987 has 2 divisors, whose sum is σ = 477479988. Its totient is φ = 477479986.

The previous prime is 477479971. The next prime is 477479999. The reversal of 477479987 is 789974774.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 477479987 - 2⁴ = 477479971 is a prime.

It is not a weakly prime, because it can be changed into another prime (477479917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 238739993 + 238739994.

It is an arithmetic number, because the mean of its divisors is an integer number (238739994).

Almost surely, 2^477479987 is an apocalyptic number.

477479987 is a deficient number, since it is larger than the sum of its proper divisors (1).

477479987 is an equidigital number, since it uses as much as digits as its factorization.

477479987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24893568, while the sum is 62.

The square root of 477479987 is about 21851.3154523932. The cubic root of 477479987 is about 781.6009125913.

The spelling of 477479987 in words is "four hundred seventy-seven million, four hundred seventy-nine thousand, nine hundred eighty-seven".