77949463 has 2 divisors, whose sum is σ = 77949464. Its totient is φ = 77949462.

The previous prime is 77949373. The next prime is 77949467. The reversal of 77949463 is 36494977.

It is a strong prime.

It is an emirp because it is prime and its reverse (36494977) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 77949463 - 2¹³ = 77941271 is a prime.

It is a super-2 number, since 2×77949463² = 12152237563976738, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77949467) 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, 38974731 + 38974732.

It is an arithmetic number, because the mean of its divisors is an integer number (38974732).

Almost surely, 2^77949463 is an apocalyptic number.

77949463 is a deficient number, since it is larger than the sum of its proper divisors (1).

77949463 is an equidigital number, since it uses as much as digits as its factorization.

77949463 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1143072, while the sum is 49.

The square root of 77949463 is about 8828.8993085209. The cubic root of 77949463 is about 427.1735715876.

The spelling of 77949463 in words is "seventy-seven million, nine hundred forty-nine thousand, four hundred sixty-three".