40407047 has 4 divisors (see below), whose sum is σ = 40422360. Its totient is φ = 40391736.

The previous prime is 40407007. The next prime is 40407049. The reversal of 40407047 is 74070404.

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 40407047 - 2¹⁴ = 40390663 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40407049) 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, 2573 + ... + 9350.

It is an arithmetic number, because the mean of its divisors is an integer number (10105590).

Almost surely, 2^40407047 is an apocalyptic number.

40407047 is a deficient number, since it is larger than the sum of its proper divisors (15313).

40407047 is a wasteful number, since it uses less digits than its factorization.

40407047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15312.

The product of its (nonzero) digits is 3136, while the sum is 26.

The square root of 40407047 is about 6356.6537580711. The cubic root of 40407047 is about 343.1513440467.

The spelling of 40407047 in words is "forty million, four hundred seven thousand, forty-seven".