83437906 has 4 divisors (see below), whose sum is σ = 125156862. Its totient is φ = 41718952.

The previous prime is 83437897. The next prime is 83437909. The reversal of 83437906 is 60973438.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60973438 = 2 ⋅30486719.

It can be written as a sum of positive squares in only one way, i.e., 65755881 + 17682025 = 8109^2 + 4205^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (83437909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20859475 + ... + 20859478.

Almost surely, 2^83437906 is an apocalyptic number.

83437906 is a deficient number, since it is larger than the sum of its proper divisors (41718956).

83437906 is a wasteful number, since it uses less digits than its factorization.

83437906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41718955.

The product of its (nonzero) digits is 108864, while the sum is 40.

The square root of 83437906 is about 9134.4351768459. The cubic root of 83437906 is about 436.9728612750.

The spelling of 83437906 in words is "eighty-three million, four hundred thirty-seven thousand, nine hundred six".