40451982 has 16 divisors (see below), whose sum is σ = 80974080. Its totient is φ = 13472312.

The previous prime is 40451981. The next prime is 40452019. The reversal of 40451982 is 28915404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40451981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7369 + ... + 11627.

It is an arithmetic number, because the mean of its divisors is an integer number (5060880).

Almost surely, 2^40451982 is an apocalyptic number.

40451982 is an abundant number, since it is smaller than the sum of its proper divisors (40522098).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40451982 is a wasteful number, since it uses less digits than its factorization.

40451982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5847.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 40451982 is about 6360.1872613941. The cubic root of 40451982 is about 343.2784983801.

The spelling of 40451982 in words is "forty million, four hundred fifty-one thousand, nine hundred eighty-two".