4047961 has 2 divisors, whose sum is σ = 4047962. Its totient is φ = 4047960.

The previous prime is 4047929. The next prime is 4047973. The reversal of 4047961 is 1697404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4000000 + 47961 = 2000^2 + 219^2 .

It is a cyclic number.

It is not a de Polignac number, because 4047961 - 2⁵ = 4047929 is a prime.

It is not a weakly prime, because it can be changed into another prime (4047991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2023980 + 2023981.

It is an arithmetic number, because the mean of its divisors is an integer number (2023981).

Almost surely, 2^4047961 is an apocalyptic number.

It is an amenable number.

4047961 is a deficient number, since it is larger than the sum of its proper divisors (1).

4047961 is an equidigital number, since it uses as much as digits as its factorization.

4047961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 4047961 is about 2011.9545223489. The cubic root of 4047961 is about 159.3720307533.

The spelling of 4047961 in words is "four million, forty-seven thousand, nine hundred sixty-one".