423974039 has 2 divisors, whose sum is σ = 423974040. Its totient is φ = 423974038.

The previous prime is 423973943. The next prime is 423974069. The reversal of 423974039 is 930479324.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 423974039 - 2²⁰ = 422925463 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 423973987 and 423974005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (423974069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211987019 + 211987020.

It is an arithmetic number, because the mean of its divisors is an integer number (211987020).

Almost surely, 2^423974039 is an apocalyptic number.

423974039 is a deficient number, since it is larger than the sum of its proper divisors (1).

423974039 is an equidigital number, since it uses as much as digits as its factorization.

423974039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 163296, while the sum is 41.

The square root of 423974039 is about 20590.6298835174. The cubic root of 423974039 is about 751.2418176799.

The spelling of 423974039 in words is "four hundred twenty-three million, nine hundred seventy-four thousand, thirty-nine".