83870434 has 8 divisors (see below), whose sum is σ = 126274140. Its totient is φ = 41779056.

The previous prime is 83870431. The next prime is 83870467. The reversal of 83870434 is 43407838.

It can be written as a sum of positive squares in 2 ways, for example, as 83777409 + 93025 = 9153^2 + 305^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 83870393 and 83870402.

It is not an unprimeable number, because it can be changed into a prime (83870431) 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, 77409 + ... + 78484.

Almost surely, 2^83870434 is an apocalyptic number.

83870434 is a deficient number, since it is larger than the sum of its proper divisors (42403706).

83870434 is a wasteful number, since it uses less digits than its factorization.

83870434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156164.

The product of its (nonzero) digits is 64512, while the sum is 37.

The square root of 83870434 is about 9158.0802573465. The cubic root of 83870434 is about 437.7266247923.

The spelling of 83870434 in words is "eighty-three million, eight hundred seventy thousand, four hundred thirty-four".