774020939 has 2 divisors, whose sum is σ = 774020940. Its totient is φ = 774020938.

The previous prime is 774020867. The next prime is 774020953. The reversal of 774020939 is 939020477.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 774020939 - 2¹² = 774016843 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 774020896 and 774020905.

It is not a weakly prime, because it can be changed into another prime (774020969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 387010469 + 387010470.

It is an arithmetic number, because the mean of its divisors is an integer number (387010470).

Almost surely, 2^774020939 is an apocalyptic number.

774020939 is a deficient number, since it is larger than the sum of its proper divisors (1).

774020939 is an equidigital number, since it uses as much as digits as its factorization.

774020939 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 95256, while the sum is 41.

The square root of 774020939 is about 27821.2318023484. The cubic root of 774020939 is about 918.1583112122.

The spelling of 774020939 in words is "seven hundred seventy-four million, twenty thousand, nine hundred thirty-nine".