106439407 has 4 divisors (see below), whose sum is σ = 106775496. Its totient is φ = 106103320.

The previous prime is 106439401. The next prime is 106439419. The reversal of 106439407 is 704934601.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 704934601 = 7 ⋅100704943.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-106439407 is a prime.

It is a super-2 number, since 2×106439407² = 22658694725023298, 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 (106439401) 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, 167569 + ... + 168202.

It is an arithmetic number, because the mean of its divisors is an integer number (26693874).

Almost surely, 2^106439407 is an apocalyptic number.

106439407 is a deficient number, since it is larger than the sum of its proper divisors (336089).

106439407 is an equidigital number, since it uses as much as digits as its factorization.

106439407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336088.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 106439407 is about 10316.9475621426. The cubic root of 106439407 is about 473.9153934578.

The spelling of 106439407 in words is "one hundred six million, four hundred thirty-nine thousand, four hundred seven".