428629399 has 8 divisors (see below), whose sum is σ = 469093392. Its totient is φ = 388415040.

The previous prime is 428629393. The next prime is 428629427. The reversal of 428629399 is 993926824.

It is a happy number.

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 428629399 - 2¹⁷ = 428498327 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428629393) 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, 58804 + ... + 65689.

It is an arithmetic number, because the mean of its divisors is an integer number (58636674).

Almost surely, 2^428629399 is an apocalyptic number.

428629399 is a deficient number, since it is larger than the sum of its proper divisors (40463993).

428629399 is a wasteful number, since it uses less digits than its factorization.

428629399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124817.

The product of its digits is 1679616, while the sum is 52.

The square root of 428629399 is about 20703.3668517949. The cubic root of 428629399 is about 753.9814336625.

The spelling of 428629399 in words is "four hundred twenty-eight million, six hundred twenty-nine thousand, three hundred ninety-nine".