40890245 has 16 divisors (see below), whose sum is σ = 54440640. Its totient is φ = 29232000.

The previous prime is 40890233. The next prime is 40890257. The reversal of 40890245 is 54209804.

It is an interprime number because it is at equal distance from previous prime (40890233) and next prime (40890257).

It is not a de Polignac number, because 40890245 - 2⁶ = 40890181 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3056 + ... + 9545.

It is an arithmetic number, because the mean of its divisors is an integer number (3402540).

Almost surely, 2^40890245 is an apocalyptic number.

It is an amenable number.

40890245 is a deficient number, since it is larger than the sum of its proper divisors (13550395).

40890245 is a wasteful number, since it uses less digits than its factorization.

40890245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12676.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 40890245 is about 6394.5480684721. The cubic root of 40890245 is about 344.5137587603.

The spelling of 40890245 in words is "forty million, eight hundred ninety thousand, two hundred forty-five".