77946394 has 8 divisors (see below), whose sum is σ = 123797268. Its totient is φ = 36680640.

The previous prime is 77946391. The next prime is 77946409. The reversal of 77946394 is 49364977.

It can be written as a sum of positive squares in 2 ways, for example, as 76475025 + 1471369 = 8745^2 + 1213^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (77946391) 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 in 3 ways as a sum of consecutive naturals, for example, 1146237 + ... + 1146304.

Almost surely, 2^77946394 is an apocalyptic number.

77946394 is a deficient number, since it is larger than the sum of its proper divisors (45850874).

77946394 is a wasteful number, since it uses less digits than its factorization.

77946394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2292560.

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

The square root of 77946394 is about 8828.7255025853. The cubic root of 77946394 is about 427.1679653360.

The spelling of 77946394 in words is "seventy-seven million, nine hundred forty-six thousand, three hundred ninety-four".