1428987499 has 8 divisors (see below), whose sum is σ = 1482935760. Its totient is φ = 1375350816.

The previous prime is 1428987487. The next prime is 1428987509. The reversal of 1428987499 is 9947898241.

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 1428987499 - 2¹⁷ = 1428856427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1428987409) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 68529 + ... + 86914.

It is an arithmetic number, because the mean of its divisors is an integer number (185366970).

Almost surely, 2^1428987499 is an apocalyptic number.

1428987499 is a deficient number, since it is larger than the sum of its proper divisors (53948261).

1428987499 is a wasteful number, since it uses less digits than its factorization.

1428987499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155789.

The product of its digits is 10450944, while the sum is 61.

The square root of 1428987499 is about 37801.9509946246. The cubic root of 1428987499 is about 1126.3572094659.

The spelling of 1428987499 in words is "one billion, four hundred twenty-eight million, nine hundred eighty-seven thousand, four hundred ninety-nine".