40994442 has 12 divisors (see below), whose sum is σ = 88821330. Its totient is φ = 13664808.

The previous prime is 40994423. The next prime is 40994461. The reversal of 40994442 is 24449904.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (40994423) and next prime (40994461).

It can be written as a sum of positive squares in only one way, i.e., 33977241 + 7017201 = 5829^2 + 2649^2 .

It is a super-3 number, since 3×40994442³ (a number of 24 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40994397 and 40994406.

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 5 ways as a sum of consecutive naturals, for example, 1138717 + ... + 1138752.

Almost surely, 2^40994442 is an apocalyptic number.

40994442 is an abundant number, since it is smaller than the sum of its proper divisors (47826888).

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

40994442 is a wasteful number, since it uses less digits than its factorization.

40994442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2277477 (or 2277474 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 40994442 is about 6402.6902158390. The cubic root of 40994442 is about 344.8061418777.

The spelling of 40994442 in words is "forty million, nine hundred ninety-four thousand, four hundred forty-two".