1428986471 has 4 divisors (see below), whose sum is σ = 1558894344. Its totient is φ = 1299078600.

The previous prime is 1428986467. The next prime is 1428986483. The reversal of 1428986471 is 1746898241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1746898241 = 11 ⋅158808931.

It is a cyclic number.

It is not a de Polignac number, because 1428986471 - 2² = 1428986467 is a prime.

It is a super-3 number, since 3×1428986471³ (a number of 28 digits) contains 333 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 (1428986071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64953920 + ... + 64953941.

It is an arithmetic number, because the mean of its divisors is an integer number (389723586).

Almost surely, 2^1428986471 is an apocalyptic number.

1428986471 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1428986471 is a deficient number, since it is larger than the sum of its proper divisors (129907873).

1428986471 is a wasteful number, since it uses less digits than its factorization.

1428986471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129907872.

The product of its digits is 774144, while the sum is 50.

The square root of 1428986471 is about 37801.9373974404. The cubic root of 1428986471 is about 1126.3569393689.

The spelling of 1428986471 in words is "one billion, four hundred twenty-eight million, nine hundred eighty-six thousand, four hundred seventy-one".