4399961 has 2 divisors, whose sum is σ = 4399962. Its totient is φ = 4399960.

The previous prime is 4399943. The next prime is 4399973. The reversal of 4399961 is 1699934.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3667225 + 732736 = 1915^2 + 856^2 .

It is a cyclic number.

It is not a de Polignac number, because 4399961 - 2²² = 205657 is a prime.

It is not a weakly prime, because it can be changed into another prime (4399931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2199980 + 2199981.

It is an arithmetic number, because the mean of its divisors is an integer number (2199981).

Almost surely, 2^4399961 is an apocalyptic number.

It is an amenable number.

4399961 is a deficient number, since it is larger than the sum of its proper divisors (1).

4399961 is an equidigital number, since it uses as much as digits as its factorization.

4399961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 52488, while the sum is 41.

The square root of 4399961 is about 2097.6084000595. The cubic root of 4399961 is about 163.8637699743.

The spelling of 4399961 in words is "four million, three hundred ninety-nine thousand, nine hundred sixty-one".