84640383 has 40 divisors (see below), whose sum is σ = 136294400. Its totient is φ = 52173072.

The previous prime is 84640379. The next prime is 84640393. The reversal of 84640383 is 38304648.

84640383 is a `hidden beast` number, since 8 + 4 + 640 + 3 + 8 + 3 = 666.

It is not a de Polignac number, because 84640383 - 2² = 84640379 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84640393) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 65538 + ... + 66816.

It is an arithmetic number, because the mean of its divisors is an integer number (3407360).

Almost surely, 2^84640383 is an apocalyptic number.

84640383 is a deficient number, since it is larger than the sum of its proper divisors (51654017).

84640383 is a wasteful number, since it uses less digits than its factorization.

84640383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1353 (or 1344 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 36.

The square root of 84640383 is about 9200.0208151938. The cubic root of 84640383 is about 439.0620221868.

The spelling of 84640383 in words is "eighty-four million, six hundred forty thousand, three hundred eighty-three".