428097539 has 2 divisors, whose sum is σ = 428097540. Its totient is φ = 428097538.

The previous prime is 428097529. The next prime is 428097541. The reversal of 428097539 is 935790824.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 428097539 - 2⁸ = 428097283 is a prime.

Together with 428097541, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 428097493 and 428097502.

It is not a weakly prime, because it can be changed into another prime (428097529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214048769 + 214048770.

It is an arithmetic number, because the mean of its divisors is an integer number (214048770).

Almost surely, 2^428097539 is an apocalyptic number.

428097539 is a deficient number, since it is larger than the sum of its proper divisors (1).

428097539 is an equidigital number, since it uses as much as digits as its factorization.

428097539 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 544320, while the sum is 47.

The square root of 428097539 is about 20690.5180940449. The cubic root of 428097539 is about 753.6694481068.

The spelling of 428097539 in words is "four hundred twenty-eight million, ninety-seven thousand, five hundred thirty-nine".