76991446 has 12 divisors (see below), whose sum is σ = 134342388. Its totient is φ = 32996292.

The previous prime is 76991443. The next prime is 76991461. The reversal of 76991446 is 64419967.

It is a junction number, because it is equal to n+sod(n) for n = 76991396 and 76991405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76991441) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 392716 + ... + 392911.

It is an arithmetic number, because the mean of its divisors is an integer number (11195199).

Almost surely, 2^76991446 is an apocalyptic number.

76991446 is a deficient number, since it is larger than the sum of its proper divisors (57350942).

76991446 is a wasteful number, since it uses less digits than its factorization.

76991446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 785643 (or 785636 counting only the distinct ones).

The product of its digits is 326592, while the sum is 46.

The square root of 76991446 is about 8774.4769644692. The cubic root of 76991446 is about 425.4163320490.

The spelling of 76991446 in words is "seventy-six million, nine hundred ninety-one thousand, four hundred forty-six".