83967009437 has 4 divisors (see below), whose sum is σ = 83988449916. Its totient is φ = 83945568960.

The previous prime is 83967009431. The next prime is 83967009439. The reversal of 83967009437 is 73490076938.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 73490076938 = 2 ⋅36745038469.

It can be written as a sum of positive squares in 2 ways, for example, as 38923738681 + 45043270756 = 197291^2 + 212234^2 .

It is a cyclic number.

It is not a de Polignac number, because 83967009437 - 2¹⁶ = 83966943901 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 (83967009431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10714364 + ... + 10722197.

It is an arithmetic number, because the mean of its divisors is an integer number (20997112479).

Almost surely, 2^83967009437 is an apocalyptic number.

It is an amenable number.

83967009437 is a deficient number, since it is larger than the sum of its proper divisors (21440479).

83967009437 is a wasteful number, since it uses less digits than its factorization.

83967009437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21440478.

The product of its (nonzero) digits is 6858432, while the sum is 56.

The spelling of 83967009437 in words is "eighty-three billion, nine hundred sixty-seven million, nine thousand, four hundred thirty-seven".