84287907 has 12 divisors (see below), whose sum is σ = 132817464. Its totient is φ = 51083520.

The previous prime is 84287881. The next prime is 84287927. The reversal of 84287907 is 70978248.

It is not a de Polignac number, because 84287907 - 2¹⁰ = 84286883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (84287927) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 425598 + ... + 425795.

It is an arithmetic number, because the mean of its divisors is an integer number (11068122).

Almost surely, 2^84287907 is an apocalyptic number.

84287907 is a deficient number, since it is larger than the sum of its proper divisors (48529557).

84287907 is a wasteful number, since it uses less digits than its factorization.

84287907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 851410 (or 851407 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 45.

The square root of 84287907 is about 9180.8445689925. The cubic root of 84287907 is about 438.4516982734.

The spelling of 84287907 in words is "eighty-four million, two hundred eighty-seven thousand, nine hundred seven".