87444967 has 2 divisors, whose sum is σ = 87444968. Its totient is φ = 87444966.

The previous prime is 87444943. The next prime is 87444977. The reversal of 87444967 is 76944478.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87444967 - 2⁷ = 87444839 is a prime.

It is a super-3 number, since 3×87444967³ (a number of 25 digits) contains 333 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 87444967.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87444977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43722483 + 43722484.

It is an arithmetic number, because the mean of its divisors is an integer number (43722484).

Almost surely, 2^87444967 is an apocalyptic number.

87444967 is a deficient number, since it is larger than the sum of its proper divisors (1).

87444967 is an equidigital number, since it uses as much as digits as its factorization.

87444967 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1354752, while the sum is 49.

The square root of 87444967 is about 9351.2013666694. The cubic root of 87444967 is about 443.8589070259.

The spelling of 87444967 in words is "eighty-seven million, four hundred forty-four thousand, nine hundred sixty-seven".