84140629 has 4 divisors (see below), whose sum is σ = 87042060. Its totient is φ = 81239200.

The previous prime is 84140621. The next prime is 84140659. The reversal of 84140629 is 92604148.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 21762225 + 62378404 = 4665^2 + 7898^2 .

It is a cyclic number.

It is not a de Polignac number, because 84140629 - 2³ = 84140621 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 84140594 and 84140603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84140621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1450672 + ... + 1450729.

It is an arithmetic number, because the mean of its divisors is an integer number (21760515).

Almost surely, 2^84140629 is an apocalyptic number.

It is an amenable number.

84140629 is a deficient number, since it is larger than the sum of its proper divisors (2901431).

84140629 is a wasteful number, since it uses less digits than its factorization.

84140629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2901430.

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 84140629 is about 9172.8201225141. The cubic root of 84140629 is about 438.1961774886.

The spelling of 84140629 in words is "eighty-four million, one hundred forty thousand, six hundred twenty-nine".