428039719 has 8 divisors (see below), whose sum is σ = 453668688. Its totient is φ = 402460800.

The previous prime is 428039693. The next prime is 428039737. The reversal of 428039719 is 917930824.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 428039719 - 2⁵ = 428039687 is a prime.

It is a super-2 number, since 2×428039719² = 366436002083197922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428030719) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5889 + ... + 29845.

It is an arithmetic number, because the mean of its divisors is an integer number (56708586).

Almost surely, 2^428039719 is an apocalyptic number.

428039719 is a deficient number, since it is larger than the sum of its proper divisors (25628969).

428039719 is a wasteful number, since it uses less digits than its factorization.

428039719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25025.

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 428039719 is about 20689.1207884724. The cubic root of 428039719 is about 753.6355157078.

The spelling of 428039719 in words is "four hundred twenty-eight million, thirty-nine thousand, seven hundred nineteen".