40998440 has 32 divisors (see below), whose sum is σ = 105425280. Its totient is φ = 14056512.

The previous prime is 40998437. The next prime is 40998469. The reversal of 40998440 is 4489904.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 40998394 and 40998403.

It is an unprimeable number.

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, 72932 + ... + 73491.

It is an arithmetic number, because the mean of its divisors is an integer number (3294540).

Almost surely, 2^40998440 is an apocalyptic number.

40998440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40998440 is an abundant number, since it is smaller than the sum of its proper divisors (64426840).

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

40998440 is a wasteful number, since it uses less digits than its factorization.

40998440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146441 (or 146437 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 40998440 is about 6403.0024207398. The cubic root of 40998440 is about 344.8173506341.

The spelling of 40998440 in words is "forty million, nine hundred ninety-eight thousand, four hundred forty".