77970434 has 8 divisors (see below), whose sum is σ = 116996880. Its totient is φ = 38971476.

The previous prime is 77970413. The next prime is 77970461. The reversal of 77970434 is 43407977.

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

It is a junction number, because it is equal to n+sod(n) for n = 77970391 and 77970400.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3137 + ... + 12875.

It is an arithmetic number, because the mean of its divisors is an integer number (14624610).

Almost surely, 2^77970434 is an apocalyptic number.

77970434 is a deficient number, since it is larger than the sum of its proper divisors (39026446).

77970434 is a wasteful number, since it uses less digits than its factorization.

77970434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13744.

The product of its (nonzero) digits is 148176, while the sum is 41.

The square root of 77970434 is about 8830.0868625399. The cubic root of 77970434 is about 427.2118761223.

The spelling of 77970434 in words is "seventy-seven million, nine hundred seventy thousand, four hundred thirty-four".