40981405 has 8 divisors (see below), whose sum is σ = 49264992. Its totient is φ = 32726928.

The previous prime is 40981387. The next prime is 40981417. The reversal of 40981405 is 50418904.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 40981405 - 2¹¹ = 40979357 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 4047 + ... + 9916.

It is an arithmetic number, because the mean of its divisors is an integer number (6158124).

Almost surely, 2^40981405 is an apocalyptic number.

It is an amenable number.

40981405 is a deficient number, since it is larger than the sum of its proper divisors (8283587).

40981405 is a wasteful number, since it uses less digits than its factorization.

40981405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14555.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 40981405 is about 6401.6720472077. The cubic root of 40981405 is about 344.7695863996.

The spelling of 40981405 in words is "forty million, nine hundred eighty-one thousand, four hundred five".