433699139 has 2 divisors, whose sum is σ = 433699140. Its totient is φ = 433699138.

The previous prime is 433699099. The next prime is 433699157. The reversal of 433699139 is 931996334.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-433699139 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 433699093 and 433699102.

It is not a weakly prime, because it can be changed into another prime (433699439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 216849569 + 216849570.

It is an arithmetic number, because the mean of its divisors is an integer number (216849570).

Almost surely, 2^433699139 is an apocalyptic number.

433699139 is a deficient number, since it is larger than the sum of its proper divisors (1).

433699139 is an equidigital number, since it uses as much as digits as its factorization.

433699139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 472392, while the sum is 47.

The square root of 433699139 is about 20825.4445090615. Note that the first 3 decimals coincide. The cubic root of 433699139 is about 756.9424356817.

The spelling of 433699139 in words is "four hundred thirty-three million, six hundred ninety-nine thousand, one hundred thirty-nine".