84429637 has 4 divisors (see below), whose sum is σ = 85265676. Its totient is φ = 83593600.

The previous prime is 84429629. The next prime is 84429641. The reversal of 84429637 is 73692448.

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 34175716 + 50253921 = 5846^2 + 7089^2 .

It is a cyclic number.

It is not a de Polignac number, because 84429637 - 2³ = 84429629 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 84429593 and 84429602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84423637) 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, 417868 + ... + 418069.

It is an arithmetic number, because the mean of its divisors is an integer number (21316419).

Almost surely, 2^84429637 is an apocalyptic number.

It is an amenable number.

84429637 is a deficient number, since it is larger than the sum of its proper divisors (836039).

84429637 is a wasteful number, since it uses less digits than its factorization.

84429637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 836038.

The product of its digits is 290304, while the sum is 43.

The square root of 84429637 is about 9188.5601157091. The cubic root of 84429637 is about 438.6973126344.

The spelling of 84429637 in words is "eighty-four million, four hundred twenty-nine thousand, six hundred thirty-seven".