40499442 has 12 divisors (see below), whose sum is σ = 87748830. Its totient is φ = 13499808.

The previous prime is 40499441. The next prime is 40499447. The reversal of 40499442 is 24499404.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 36614601 + 3884841 = 6051^2 + 1971^2 .

It is a super-2 number, since 2×40499442² = 3280409604622728, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40499397 and 40499406.

It is not an unprimeable number, because it can be changed into a prime (40499441) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1124967 + ... + 1125002.

Almost surely, 2^40499442 is an apocalyptic number.

40499442 is an abundant number, since it is smaller than the sum of its proper divisors (47249388).

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

40499442 is a wasteful number, since it uses less digits than its factorization.

40499442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2249977 (or 2249974 counting only the distinct ones).

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

The square root of 40499442 is about 6363.9171899075. The cubic root of 40499442 is about 343.4126955969.

The spelling of 40499442 in words is "forty million, four hundred ninety-nine thousand, four hundred forty-two".