428717914 has 4 divisors (see below), whose sum is σ = 643076874. Its totient is φ = 214358956.

The previous prime is 428717909. The next prime is 428717923. The reversal of 428717914 is 419717824.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 253605625 + 175112289 = 15925^2 + 13233^2 .

It is a super-2 number, since 2×428717914² = 367598099569022792, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107179477 + ... + 107179480.

Almost surely, 2^428717914 is an apocalyptic number.

428717914 is a deficient number, since it is larger than the sum of its proper divisors (214358960).

428717914 is a wasteful number, since it uses less digits than its factorization.

428717914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214358959.

The product of its digits is 112896, while the sum is 43.

The square root of 428717914 is about 20705.5044372263. The cubic root of 428717914 is about 754.0333309218.

It can be divided in two parts, 4287 and 17914, that added together give a square (22201 = 149²).

The spelling of 428717914 in words is "four hundred twenty-eight million, seven hundred seventeen thousand, nine hundred fourteen".