80921146 has 8 divisors (see below), whose sum is σ = 124662420. Its totient is φ = 39367008.

The previous prime is 80921143. The next prime is 80921149. The reversal of 80921146 is 64112908.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (80921143) and next prime (80921149).

It can be written as a sum of positive squares in 2 ways, for example, as 80802121 + 119025 = 8989^2 + 345^2 .

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 (80921143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 546691 + ... + 546838.

Almost surely, 2^80921146 is an apocalyptic number.

80921146 is a deficient number, since it is larger than the sum of its proper divisors (43741274).

80921146 is a wasteful number, since it uses less digits than its factorization.

80921146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1093568.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 80921146 is about 8995.6181555244. The cubic root of 80921146 is about 432.5344216203.

The spelling of 80921146 in words is "eighty million, nine hundred twenty-one thousand, one hundred forty-six".