999201407 has 2 divisors, whose sum is σ = 999201408. Its totient is φ = 999201406.

The previous prime is 999201377. The next prime is 999201439. The reversal of 999201407 is 704102999.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-999201407 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999201107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499600703 + 499600704.

It is an arithmetic number, because the mean of its divisors is an integer number (499600704).

Almost surely, 2^999201407 is an apocalyptic number.

999201407 is a deficient number, since it is larger than the sum of its proper divisors (1).

999201407 is an equidigital number, since it uses as much as digits as its factorization.

999201407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40824, while the sum is 41.

The square root of 999201407 is about 31610.1472157281. The cubic root of 999201407 is about 999.7337314407.

The spelling of 999201407 in words is "nine hundred ninety-nine million, two hundred one thousand, four hundred seven".