1039735421 has 2 divisors, whose sum is σ = 1039735422. Its totient is φ = 1039735420.

The previous prime is 1039735393. The next prime is 1039735427. The reversal of 1039735421 is 1245379301.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 595116025 + 444619396 = 24395^2 + 21086^2 .

It is a cyclic number.

It is not a de Polignac number, because 1039735421 - 2⁶ = 1039735357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1039735427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 519867710 + 519867711.

It is an arithmetic number, because the mean of its divisors is an integer number (519867711).

Almost surely, 2^1039735421 is an apocalyptic number.

It is an amenable number.

1039735421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1039735421 is an equidigital number, since it uses as much as digits as its factorization.

1039735421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 1039735421 is about 32244.9286090076. The cubic root of 1039735421 is about 1013.0734796417.

The spelling of 1039735421 in words is "one billion, thirty-nine million, seven hundred thirty-five thousand, four hundred twenty-one".