106401397 has 4 divisors (see below), whose sum is σ = 106581420. Its totient is φ = 106221376.

The previous prime is 106401391. The next prime is 106401409. The reversal of 106401397 is 793104601.

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: 793104601 = 109 ⋅7276189.

It can be written as a sum of positive squares in 2 ways, for example, as 63904036 + 42497361 = 7994^2 + 6519^2 .

It is a cyclic number.

It is not a de Polignac number, because 106401397 - 2³ = 106401389 is a prime.

It is a super-2 number, since 2×106401397² = 22642514567103218, 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 (106401391) 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, 89122 + ... + 90307.

It is an arithmetic number, because the mean of its divisors is an integer number (26645355).

Almost surely, 2^106401397 is an apocalyptic number.

It is an amenable number.

106401397 is a deficient number, since it is larger than the sum of its proper divisors (180023).

106401397 is an equidigital number, since it uses as much as digits as its factorization.

106401397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180022.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 106401397 is about 10315.1052830303. The cubic root of 106401397 is about 473.8589742885.

Adding to 106401397 its reverse (793104601), we get a palindrome (899505998).

The spelling of 106401397 in words is "one hundred six million, four hundred one thousand, three hundred ninety-seven".