1990004339 has 2 divisors, whose sum is σ = 1990004340. Its totient is φ = 1990004338.

The previous prime is 1990004329. The next prime is 1990004351. The reversal of 1990004339 is 9334000991.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1990004339 - 2¹⁶ = 1989938803 is a prime.

It is not a weakly prime, because it can be changed into another prime (1990004329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 995002169 + 995002170.

It is an arithmetic number, because the mean of its divisors is an integer number (995002170).

Almost surely, 2^1990004339 is an apocalyptic number.

1990004339 is a deficient number, since it is larger than the sum of its proper divisors (1).

1990004339 is an equidigital number, since it uses as much as digits as its factorization.

1990004339 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26244, while the sum is 38.

The square root of 1990004339 is about 44609.4646795946. The cubic root of 1990004339 is about 1257.8185861256.

It can be divided in two parts, 19900043 and 39, that multiplied together give a palindrome (776101677).

The spelling of 1990004339 in words is "one billion, nine hundred ninety million, four thousand, three hundred thirty-nine".