1020433399 has 4 divisors (see below), whose sum is σ = 1074140440. Its totient is φ = 966726360.

The previous prime is 1020433391. The next prime is 1020433409. The reversal of 1020433399 is 9933340201.

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

It is a cyclic number.

It is not a de Polignac number, because 1020433399 - 2³ = 1020433391 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 (1020433391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26853492 + ... + 26853529.

It is an arithmetic number, because the mean of its divisors is an integer number (268535110).

Almost surely, 2^1020433399 is an apocalyptic number.

1020433399 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1020433399 is a deficient number, since it is larger than the sum of its proper divisors (53707041).

1020433399 is an equidigital number, since it uses as much as digits as its factorization.

1020433399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53707040.

The product of its (nonzero) digits is 17496, while the sum is 34.

The square root of 1020433399 is about 31944.2232492825. The cubic root of 1020433399 is about 1006.7652610307.

The spelling of 1020433399 in words is "one billion, twenty million, four hundred thirty-three thousand, three hundred ninety-nine".