106396391 has 4 divisors (see below), whose sum is σ = 108660192. Its totient is φ = 104132592.

The previous prime is 106396379. The next prime is 106396399. The reversal of 106396391 is 193693601.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 193693601 = 73 ⋅2653337.

It is a cyclic number.

It is not a de Polignac number, because 106396391 - 2¹⁴ = 106380007 is a prime.

It is a super-2 number, since 2×106396391² = 22640384035649762, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (106396399) 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, 1131830 + ... + 1131923.

It is an arithmetic number, because the mean of its divisors is an integer number (27165048).

Almost surely, 2^106396391 is an apocalyptic number.

106396391 is a deficient number, since it is larger than the sum of its proper divisors (2263801).

106396391 is an equidigital number, since it uses as much as digits as its factorization.

106396391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2263800.

The product of its (nonzero) digits is 26244, while the sum is 38.

The square root of 106396391 is about 10314.8626263271. The cubic root of 106396391 is about 473.8515427594.

The spelling of 106396391 in words is "one hundred six million, three hundred ninety-six thousand, three hundred ninety-one".