402006907 has 2 divisors, whose sum is σ = 402006908. Its totient is φ = 402006906.

The previous prime is 402006893. The next prime is 402006919. The reversal of 402006907 is 709600204.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 402006907 - 2⁷ = 402006779 is a prime.

It is not a weakly prime, because it can be changed into another prime (402006937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201003453 + 201003454.

It is an arithmetic number, because the mean of its divisors is an integer number (201003454).

Almost surely, 2^402006907 is an apocalyptic number.

402006907 is a deficient number, since it is larger than the sum of its proper divisors (1).

402006907 is an equidigital number, since it uses as much as digits as its factorization.

402006907 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 402006907 is about 20050.1098999482. The cubic root of 402006907 is about 738.0364960421.

The spelling of 402006907 in words is "four hundred two million, six thousand, nine hundred seven".