6401923 has 16 divisors (see below), whose sum is σ = 7257600. Its totient is φ = 5597280.

The previous prime is 6401921. The next prime is 6401929. The reversal of 6401923 is 3291046.

It is a cyclic number.

It is not a de Polignac number, because 6401923 - 2¹ = 6401921 is a prime.

It is a Duffinian number.

6401923 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6401921) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45988 + ... + 46126.

It is an arithmetic number, because the mean of its divisors is an integer number (453600).

Almost surely, 2^6401923 is an apocalyptic number.

6401923 is a deficient number, since it is larger than the sum of its proper divisors (855677).

6401923 is a wasteful number, since it uses less digits than its factorization.

6401923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 6401923 is about 2530.2021658358. The cubic root of 6401923 is about 185.6821468476.

Adding to 6401923 its reverse (3291046), we get a palindrome (9692969).

The spelling of 6401923 in words is "six million, four hundred one thousand, nine hundred twenty-three".