6440923341 has 6 divisors (see below), whose sum is σ = 9303555950. Its totient is φ = 4293948888.

The previous prime is 6440923337. The next prime is 6440923361. The reversal of 6440923341 is 1433290446.

It is a happy number.

6440923341 is a `hidden beast` number, since 644 + 0 + 9 + 2 + 3 + 3 + 4 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 6395360841 + 45562500 = 79971^2 + 6750^2 .

It is not a de Polignac number, because 6440923341 - 2² = 6440923337 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6440923296 and 6440923305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6440923361) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 357829066 + ... + 357829083.

Almost surely, 2^6440923341 is an apocalyptic number.

It is an amenable number.

6440923341 is a deficient number, since it is larger than the sum of its proper divisors (2862632609).

6440923341 is a wasteful number, since it uses less digits than its factorization.

6440923341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 715658155 (or 715658152 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 36.

The square root of 6440923341 is about 80255.3633161049. The cubic root of 6440923341 is about 1860.5844061991.

The spelling of 6440923341 in words is "six billion, four hundred forty million, nine hundred twenty-three thousand, three hundred forty-one".