404002307 has 2 divisors, whose sum is σ = 404002308. Its totient is φ = 404002306.

The previous prime is 404002279. The next prime is 404002327. The reversal of 404002307 is 703200404.

It is a happy number.

It is an a-pointer prime, because the next prime (404002327) can be obtained adding 404002307 to its sum of digits (20).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 404002307 - 2¹² = 403998211 is a prime.

It is a super-2 number, since 2×404002307² = 326435728122644498, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (404002327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202001153 + 202001154.

It is an arithmetic number, because the mean of its divisors is an integer number (202001154).

Almost surely, 2^404002307 is an apocalyptic number.

404002307 is a deficient number, since it is larger than the sum of its proper divisors (1).

404002307 is an equidigital number, since it uses as much as digits as its factorization.

404002307 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 20.

The square root of 404002307 is about 20099.8086309298. The cubic root of 404002307 is about 739.2555863134.

The spelling of 404002307 in words is "four hundred four million, two thousand, three hundred seven".