106399445 has 4 divisors (see below), whose sum is σ = 127679340. Its totient is φ = 85119552.

The previous prime is 106399441. The next prime is 106399459. The reversal of 106399445 is 544993601.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 81018001 + 25381444 = 9001^2 + 5038^2 .

It is a cyclic number.

It is not a de Polignac number, because 106399445 - 2² = 106399441 is a prime.

It is a super-2 number, since 2×106399445² = 22641683792616050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (106399441) 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, 10639940 + ... + 10639949.

It is an arithmetic number, because the mean of its divisors is an integer number (31919835).

Almost surely, 2^106399445 is an apocalyptic number.

It is an amenable number.

106399445 is a deficient number, since it is larger than the sum of its proper divisors (21279895).

106399445 is an equidigital number, since it uses as much as digits as its factorization.

106399445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21279894.

The product of its (nonzero) digits is 116640, while the sum is 41.

The square root of 106399445 is about 10315.0106640759. The cubic root of 106399445 is about 473.8560765246.

The spelling of 106399445 in words is "one hundred six million, three hundred ninety-nine thousand, four hundred forty-five".