80429746 has 4 divisors (see below), whose sum is σ = 120644622. Its totient is φ = 40214872.

The previous prime is 80429707. The next prime is 80429747. The reversal of 80429746 is 64792408.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 63824121 + 16605625 = 7989^2 + 4075^2 .

It is a junction number, because it is equal to n+sod(n) for n = 80429699 and 80429708.

It is not an unprimeable number, because it can be changed into a prime (80429747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20107435 + ... + 20107438.

Almost surely, 2^80429746 is an apocalyptic number.

80429746 is a deficient number, since it is larger than the sum of its proper divisors (40214876).

80429746 is a wasteful number, since it uses less digits than its factorization.

80429746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40214875.

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 80429746 is about 8968.2632655381. The cubic root of 80429746 is about 431.6571103132.

The spelling of 80429746 in words is "eighty million, four hundred twenty-nine thousand, seven hundred forty-six".