1423989907 has 2 divisors, whose sum is σ = 1423989908. Its totient is φ = 1423989906.

The previous prime is 1423989899. The next prime is 1423989937. The reversal of 1423989907 is 7099893241.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1423989907 - 2³ = 1423989899 is a prime.

It is not a weakly prime, because it can be changed into another prime (1423989937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 711994953 + 711994954.

It is an arithmetic number, because the mean of its divisors is an integer number (711994954).

Almost surely, 2^1423989907 is an apocalyptic number.

1423989907 is a deficient number, since it is larger than the sum of its proper divisors (1).

1423989907 is an equidigital number, since it uses as much as digits as its factorization.

1423989907 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 979776, while the sum is 52.

The square root of 1423989907 is about 37735.7907960069. The cubic root of 1423989907 is about 1125.0426076373.

The spelling of 1423989907 in words is "one billion, four hundred twenty-three million, nine hundred eighty-nine thousand, nine hundred seven".