40968945 has 12 divisors (see below), whose sum is σ = 71012916. Its totient is φ = 21850080.

The previous prime is 40968923. The next prime is 40968979. The reversal of 40968945 is 54986904.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 29517489 + 11451456 = 5433^2 + 3384^2 .

It is not a de Polignac number, because 40968945 - 2⁷ = 40968817 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 910421 = 40968945 / (4 + 0 + 9 + 6 + 8 + 9 + 4 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 40968945.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 455166 + ... + 455255.

It is an arithmetic number, because the mean of its divisors is an integer number (5917743).

Almost surely, 2^40968945 is an apocalyptic number.

40968945 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

40968945 is a deficient number, since it is larger than the sum of its proper divisors (30043971).

40968945 is a wasteful number, since it uses less digits than its factorization.

40968945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 910432 (or 910429 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The square root of 40968945 is about 6400.6987899760. The cubic root of 40968945 is about 344.7346415713.

It can be divided in two parts, 4096 and 8945, that added together give a triangular number (13041 = T₁₆₁).

The spelling of 40968945 in words is "forty million, nine hundred sixty-eight thousand, nine hundred forty-five".