40401611 has 4 divisors (see below), whose sum is σ = 41794800. Its totient is φ = 39008424.

The previous prime is 40401583. The next prime is 40401617. The reversal of 40401611 is 11610404.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40401611 - 2¹⁰ = 40400587 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40401611.

It is not an unprimeable number, because it can be changed into a prime (40401617) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 696551 + ... + 696608.

It is an arithmetic number, because the mean of its divisors is an integer number (10448700).

Almost surely, 2^40401611 is an apocalyptic number.

40401611 is a deficient number, since it is larger than the sum of its proper divisors (1393189).

40401611 is a wasteful number, since it uses less digits than its factorization.

40401611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1393188.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 40401611 is about 6356.2261602306. The cubic root of 40401611 is about 343.1359551934.

The spelling of 40401611 in words is "forty million, four hundred one thousand, six hundred eleven".