481879987 has 2 divisors, whose sum is σ = 481879988. Its totient is φ = 481879986.

The previous prime is 481879967. The next prime is 481879991. The reversal of 481879987 is 789978184.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 481879987 - 2⁷ = 481879859 is a prime.

It is a super-2 number, since 2×481879987² = 464416643742240338, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (481879967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 240939993 + 240939994.

It is an arithmetic number, because the mean of its divisors is an integer number (240939994).

Almost surely, 2^481879987 is an apocalyptic number.

481879987 is a deficient number, since it is larger than the sum of its proper divisors (1).

481879987 is an equidigital number, since it uses as much as digits as its factorization.

481879987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8128512, while the sum is 61.

The square root of 481879987 is about 21951.7650087641. The cubic root of 481879987 is about 783.9944049606.

The spelling of 481879987 in words is "four hundred eighty-one million, eight hundred seventy-nine thousand, nine hundred eighty-seven".