40948989 has 16 divisors (see below), whose sum is σ = 55785600. Its totient is φ = 26712576.

The previous prime is 40948987. The next prime is 40948997. The reversal of 40948989 is 98984904.

It is not a de Polignac number, because 40948989 - 2¹ = 40948987 is a prime.

40948989 is a modest number, since divided by 8989 gives 4094 as remainder.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40948987) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26757 + ... + 28245.

It is an arithmetic number, because the mean of its divisors is an integer number (3486600).

Almost surely, 2^40948989 is an apocalyptic number.

It is an amenable number.

40948989 is a deficient number, since it is larger than the sum of its proper divisors (14836611).

40948989 is a wasteful number, since it uses less digits than its factorization.

40948989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1684.

The product of its (nonzero) digits is 746496, while the sum is 51.

The square root of 40948989 is about 6399.1397078045. The cubic root of 40948989 is about 344.6786589905.

The spelling of 40948989 in words is "forty million, nine hundred forty-eight thousand, nine hundred eighty-nine".