40981345 has 8 divisors (see below), whose sum is σ = 50377320. Its totient is φ = 31985280.

The previous prime is 40981337. The next prime is 40981351. The reversal of 40981345 is 54318904.

It can be written as a sum of positive squares in 4 ways, for example, as 6512704 + 34468641 = 2552^2 + 5871^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40981345 - 2³ = 40981337 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40981345.

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, 99750 + ... + 100159.

It is an arithmetic number, because the mean of its divisors is an integer number (6297165).

Almost surely, 2^40981345 is an apocalyptic number.

It is an amenable number.

40981345 is a deficient number, since it is larger than the sum of its proper divisors (9395975).

40981345 is a wasteful number, since it uses less digits than its factorization.

40981345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199955.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 40981345 is about 6401.6673609303. The cubic root of 40981345 is about 344.7694181429.

The spelling of 40981345 in words is "forty million, nine hundred eighty-one thousand, three hundred forty-five".