40290415 has 16 divisors (see below), whose sum is σ = 53273376. Its totient is φ = 29008000.

The previous prime is 40290409. The next prime is 40290463. The reversal of 40290415 is 51409204.

It is not a de Polignac number, because 40290415 - 2¹⁹ = 39766127 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40290415.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1929 + ... + 9181.

It is an arithmetic number, because the mean of its divisors is an integer number (3329586).

Almost surely, 2^40290415 is an apocalyptic number.

40290415 is a deficient number, since it is larger than the sum of its proper divisors (12982961).

40290415 is a wasteful number, since it uses less digits than its factorization.

40290415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7370.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 40290415 is about 6347.4731192814. The cubic root of 40290415 is about 342.8208654159.

Adding to 40290415 its reverse (51409204), we get a palindrome (91699619).

The spelling of 40290415 in words is "forty million, two hundred ninety thousand, four hundred fifteen".