774740431 has 2 divisors, whose sum is σ = 774740432. Its totient is φ = 774740430.

The previous prime is 774740429. The next prime is 774740453. The reversal of 774740431 is 134047477.

It is a weak prime.

It is an emirp because it is prime and its reverse (134047477) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 774740431 - 2¹ = 774740429 is a prime.

It is a super-2 number, since 2×774740431² = 1200445470852131522, which contains 22 as substring.

Together with 774740429, it forms a pair of twin primes.

It is equal to p_39912625 and since 774740431 and 39912625 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (774740401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 387370215 + 387370216.

It is an arithmetic number, because the mean of its divisors is an integer number (387370216).

Almost surely, 2^774740431 is an apocalyptic number.

774740431 is a deficient number, since it is larger than the sum of its proper divisors (1).

774740431 is an equidigital number, since it uses as much as digits as its factorization.

774740431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 65856, while the sum is 37.

The square root of 774740431 is about 27834.1594268625. The cubic root of 774740431 is about 918.4427147912.

The spelling of 774740431 in words is "seven hundred seventy-four million, seven hundred forty thousand, four hundred thirty-one".