441451978 has 16 divisors (see below), whose sum is σ = 747286560. Its totient is φ = 193740400.

The previous prime is 441451963. The next prime is 441451979. The reversal of 441451978 is 879154144.

It is a super-2 number, since 2×441451978² = 389759697760224968, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (441451979) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 345328 + ... + 346603.

It is an arithmetic number, because the mean of its divisors is an integer number (46705410).

Almost surely, 2^441451978 is an apocalyptic number.

441451978 is a deficient number, since it is larger than the sum of its proper divisors (305834582).

441451978 is a wasteful number, since it uses less digits than its factorization.

441451978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 691973.

The product of its digits is 161280, while the sum is 43.

The square root of 441451978 is about 21010.7586250473. The cubic root of 441451978 is about 761.4262104140.

The spelling of 441451978 in words is "four hundred forty-one million, four hundred fifty-one thousand, nine hundred seventy-eight".