40407490 has 16 divisors (see below), whose sum is σ = 76561920. Its totient is φ = 15312240.

The previous prime is 40407467. The next prime is 40407517. The reversal of 40407490 is 9470404.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 106146 + ... + 106525.

It is an arithmetic number, because the mean of its divisors is an integer number (4785120).

Almost surely, 2^40407490 is an apocalyptic number.

40407490 is a deficient number, since it is larger than the sum of its proper divisors (36154430).

40407490 is a wasteful number, since it uses less digits than its factorization.

40407490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212697.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 40407490 is about 6356.6886033532. The cubic root of 40407490 is about 343.1525980812.

Adding to 40407490 its reverse (9470404), we get a palindrome (49877894).

The spelling of 40407490 in words is "forty million, four hundred seven thousand, four hundred ninety".