84276987 has 16 divisors (see below), whose sum is σ = 116820480. Its totient is φ = 53978400.

The previous prime is 84276953. The next prime is 84277001. The reversal of 84276987 is 78967248.

It is not a de Polignac number, because 84276987 - 2⁶ = 84276923 is a prime.

It is a super-2 number, since 2×84276987² = 14205221075596338, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (84276937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16062 + ... + 20652.

It is an arithmetic number, because the mean of its divisors is an integer number (7301280).

Almost surely, 2^84276987 is an apocalyptic number.

84276987 is a gapful number since it is divisible by the number (87) formed by its first and last digit.

84276987 is a deficient number, since it is larger than the sum of its proper divisors (32543493).

84276987 is a wasteful number, since it uses less digits than its factorization.

84276987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4834.

The product of its digits is 1354752, while the sum is 51.

The square root of 84276987 is about 9180.2498332017. The cubic root of 84276987 is about 438.4327627799.

The spelling of 84276987 in words is "eighty-four million, two hundred seventy-six thousand, nine hundred eighty-seven".