105406445 has 8 divisors (see below), whose sum is σ = 130849560. Its totient is φ = 81417280.

The previous prime is 105406423. The next prime is 105406487. The reversal of 105406445 is 544604501.

It can be written as a sum of positive squares in 4 ways, for example, as 20232004 + 85174441 = 4498^2 + 9229^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 105406445 - 2²² = 101212141 is a prime.

It is a super-2 number, since 2×105406445² = 22221037295076050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 363326 + ... + 363615.

It is an arithmetic number, because the mean of its divisors is an integer number (16356195).

Almost surely, 2^105406445 is an apocalyptic number.

It is an amenable number.

105406445 is a deficient number, since it is larger than the sum of its proper divisors (25443115).

105406445 is an equidigital number, since it uses as much as digits as its factorization.

105406445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 726975.

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 105406445 is about 10266.7640958581. The cubic root of 105406445 is about 472.3773390809.

The spelling of 105406445 in words is "one hundred five million, four hundred six thousand, four hundred forty-five".