1043385499 has 4 divisors (see below), whose sum is σ = 1123645936. Its totient is φ = 963125064.

The previous prime is 1043385491. The next prime is 1043385509. The reversal of 1043385499 is 9945833401.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9945833401 = 7 ⋅1420833343.

It is a cyclic number.

It is not a de Polignac number, because 1043385499 - 2³ = 1043385491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1043385491) 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, 40130199 + ... + 40130224.

It is an arithmetic number, because the mean of its divisors is an integer number (280911484).

Almost surely, 2^1043385499 is an apocalyptic number.

1043385499 is a deficient number, since it is larger than the sum of its proper divisors (80260437).

1043385499 is an equidigital number, since it uses as much as digits as its factorization.

1043385499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80260436.

The product of its (nonzero) digits is 466560, while the sum is 46.

The square root of 1043385499 is about 32301.4782788652. The cubic root of 1043385499 is about 1014.2575880932.

The spelling of 1043385499 in words is "one billion, forty-three million, three hundred eighty-five thousand, four hundred ninety-nine".