441697987 has 2 divisors, whose sum is σ = 441697988. Its totient is φ = 441697986.

The previous prime is 441697979. The next prime is 441698009. The reversal of 441697987 is 789796144.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 441697987 - 2³ = 441697979 is a prime.

It is a super-2 number, since 2×441697987² = 390194223439704338, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (441697967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220848993 + 220848994.

It is an arithmetic number, because the mean of its divisors is an integer number (220848994).

Almost surely, 2^441697987 is an apocalyptic number.

441697987 is a deficient number, since it is larger than the sum of its proper divisors (1).

441697987 is an equidigital number, since it uses as much as digits as its factorization.

441697987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3048192, while the sum is 55.

The square root of 441697987 is about 21016.6121675212. The cubic root of 441697987 is about 761.5676247505.

The spelling of 441697987 in words is "four hundred forty-one million, six hundred ninety-seven thousand, nine hundred eighty-seven".