6899944 has 8 divisors (see below), whose sum is σ = 12937410. Its totient is φ = 3449968.

The previous prime is 6899923. The next prime is 6899947. The reversal of 6899944 is 4499986.

It can be written as a sum of positive squares in only one way, i.e., 6708100 + 191844 = 2590^2 + 438^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (6899947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 431239 + ... + 431254.

Almost surely, 2^6899944 is an apocalyptic number.

It is an amenable number.

6899944 is a deficient number, since it is larger than the sum of its proper divisors (6037466).

6899944 is a wasteful number, since it uses less digits than its factorization.

6899944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 862499 (or 862495 counting only the distinct ones).

The product of its digits is 559872, while the sum is 49.

The square root of 6899944 is about 2626.7744478733. The cubic root of 6899944 is about 190.3773111631.

The spelling of 6899944 in words is "six million, eight hundred ninety-nine thousand, nine hundred forty-four".