1032020399 has 4 divisors (see below), whose sum is σ = 1051492536. Its totient is φ = 1012548264.

The previous prime is 1032020369. The next prime is 1032020443. The reversal of 1032020399 is 9930202301.

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 1032020399 - 2¹² = 1032016303 is a prime.

It is a super-2 number, since 2×1032020399² = 2130132207904238402, which contains 22 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 (1032020329) 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 3 ways as a sum of consecutive naturals, for example, 9735989 + ... + 9736094.

It is an arithmetic number, because the mean of its divisors is an integer number (262873134).

Almost surely, 2^1032020399 is an apocalyptic number.

1032020399 is a deficient number, since it is larger than the sum of its proper divisors (19472137).

1032020399 is an equidigital number, since it uses as much as digits as its factorization.

1032020399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19472136.

The product of its (nonzero) digits is 2916, while the sum is 29.

The square root of 1032020399 is about 32125.0743034160. The cubic root of 1032020399 is about 1010.5615277663.

The spelling of 1032020399 in words is "one billion, thirty-two million, twenty thousand, three hundred ninety-nine".