40049817 has 4 divisors (see below), whose sum is σ = 53399760. Its totient is φ = 26699876.

The previous prime is 40049803. The next prime is 40049843. The reversal of 40049817 is 71894004.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40049817 - 2¹⁸ = 39787673 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40049857) 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, 6674967 + ... + 6674972.

It is an arithmetic number, because the mean of its divisors is an integer number (13349940).

Almost surely, 2^40049817 is an apocalyptic number.

It is an amenable number.

40049817 is a deficient number, since it is larger than the sum of its proper divisors (13349943).

40049817 is a wasteful number, since it uses less digits than its factorization.

40049817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13349942.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 40049817 is about 6328.4924745156. The cubic root of 40049817 is about 342.1371068886.

The spelling of 40049817 in words is "forty million, forty-nine thousand, eight hundred seventeen".