105973639 has 2 divisors, whose sum is σ = 105973640. Its totient is φ = 105973638.

The previous prime is 105973613. The next prime is 105973649. The reversal of 105973639 is 936379501.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 105973639 - 2⁵ = 105973607 is a prime.

It is a super-2 number, since 2×105973639² = 22460824325804642, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 105973595 and 105973604.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (105973649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52986819 + 52986820.

It is an arithmetic number, because the mean of its divisors is an integer number (52986820).

Almost surely, 2^105973639 is an apocalyptic number.

105973639 is a deficient number, since it is larger than the sum of its proper divisors (1).

105973639 is an equidigital number, since it uses as much as digits as its factorization.

105973639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 153090, while the sum is 43.

The square root of 105973639 is about 10294.3498580532. The cubic root of 105973639 is about 473.2231142009.

The spelling of 105973639 in words is "one hundred five million, nine hundred seventy-three thousand, six hundred thirty-nine".