475148987 has 2 divisors, whose sum is σ = 475148988. Its totient is φ = 475148986.

The previous prime is 475148923. The next prime is 475149013. The reversal of 475148987 is 789841574.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 475148987 - 2⁶ = 475148923 is a prime.

It is not a weakly prime, because it can be changed into another prime (475144987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 237574493 + 237574494.

It is an arithmetic number, because the mean of its divisors is an integer number (237574494).

Almost surely, 2^475148987 is an apocalyptic number.

475148987 is a deficient number, since it is larger than the sum of its proper divisors (1).

475148987 is an equidigital number, since it uses as much as digits as its factorization.

475148987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2257920, while the sum is 53.

The square root of 475148987 is about 21797.9124459201. The cubic root of 475148987 is about 780.3269432599.

The spelling of 475148987 in words is "four hundred seventy-five million, one hundred forty-eight thousand, nine hundred eighty-seven".