84691388 has 12 divisors (see below), whose sum is σ = 150240720. Its totient is φ = 41765472.

The previous prime is 84691367. The next prime is 84691393. The reversal of 84691388 is 88319648.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144728 + ... + 145311.

It is an arithmetic number, because the mean of its divisors is an integer number (12520060).

Almost surely, 2^84691388 is an apocalyptic number.

It is an amenable number.

84691388 is a deficient number, since it is larger than the sum of its proper divisors (65549332).

84691388 is a wasteful number, since it uses less digits than its factorization.

84691388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290116 (or 290114 counting only the distinct ones).

The product of its digits is 331776, while the sum is 47.

The square root of 84691388 is about 9202.7924023092. The cubic root of 84691388 is about 439.1501986215.

The spelling of 84691388 in words is "eighty-four million, six hundred ninety-one thousand, three hundred eighty-eight".