1355620939 has 2 divisors, whose sum is σ = 1355620940. Its totient is φ = 1355620938.

The previous prime is 1355620933. The next prime is 1355620951. The reversal of 1355620939 is 9390265531.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1355620939 - 2¹⁹ = 1355096651 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1355620895 and 1355620904.

It is not a weakly prime, because it can be changed into another prime (1355620933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 677810469 + 677810470.

It is an arithmetic number, because the mean of its divisors is an integer number (677810470).

Almost surely, 2^1355620939 is an apocalyptic number.

1355620939 is a deficient number, since it is larger than the sum of its proper divisors (1).

1355620939 is an equidigital number, since it uses as much as digits as its factorization.

1355620939 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 218700, while the sum is 43.

The square root of 1355620939 is about 36818.7579774223. The cubic root of 1355620939 is about 1106.7412305307.

The spelling of 1355620939 in words is "one billion, three hundred fifty-five million, six hundred twenty thousand, nine hundred thirty-nine".