84723487 has 2 divisors, whose sum is σ = 84723488. Its totient is φ = 84723486.

The previous prime is 84723479. The next prime is 84723503. The reversal of 84723487 is 78432748.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84723487 - 2³ = 84723479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84723407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42361743 + 42361744.

It is an arithmetic number, because the mean of its divisors is an integer number (42361744).

Almost surely, 2^84723487 is an apocalyptic number.

84723487 is a deficient number, since it is larger than the sum of its proper divisors (1).

84723487 is an equidigital number, since it uses as much as digits as its factorization.

84723487 is an evil number, because the sum of its binary digits is even.

The product of its digits is 301056, while the sum is 43.

The square root of 84723487 is about 9204.5362186261. The cubic root of 84723487 is about 439.2056725882.

The spelling of 84723487 in words is "eighty-four million, seven hundred twenty-three thousand, four hundred eighty-seven".