83879069 has 2 divisors, whose sum is σ = 83879070. Its totient is φ = 83879068.

The previous prime is 83879063. The next prime is 83879099. The reversal of 83879069 is 96097838.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70644025 + 13235044 = 8405^2 + 3638^2 .

It is a cyclic number.

It is not a de Polignac number, because 83879069 - 2¹⁶ = 83813533 is a prime.

It is a super-2 number, since 2×83879069² = 14071396432613522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83879063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41939534 + 41939535.

It is an arithmetic number, because the mean of its divisors is an integer number (41939535).

Almost surely, 2^83879069 is an apocalyptic number.

It is an amenable number.

83879069 is a deficient number, since it is larger than the sum of its proper divisors (1).

83879069 is an equidigital number, since it uses as much as digits as its factorization.

83879069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 653184, while the sum is 50.

The square root of 83879069 is about 9158.5516868116. The cubic root of 83879069 is about 437.7416465328.

The spelling of 83879069 in words is "eighty-three million, eight hundred seventy-nine thousand, sixty-nine".