6909401 has 4 divisors (see below), whose sum is σ = 6972900. Its totient is φ = 6845904.

The previous prime is 6909391. The next prime is 6909437. The reversal of 6909401 is 1049096.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5180176 + 1729225 = 2276^2 + 1315^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6909401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6905401) 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, 31586 + ... + 31803.

It is an arithmetic number, because the mean of its divisors is an integer number (1743225).

Almost surely, 2^6909401 is an apocalyptic number.

It is an amenable number.

6909401 is a deficient number, since it is larger than the sum of its proper divisors (63499).

6909401 is a wasteful number, since it uses less digits than its factorization.

6909401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63498.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 6909401 is about 2628.5739479802. The cubic root of 6909401 is about 190.4642479229.

The spelling of 6909401 in words is "six million, nine hundred nine thousand, four hundred one".