40083749 has 4 divisors (see below), whose sum is σ = 42193440. Its totient is φ = 37974060.

The previous prime is 40083737. The next prime is 40083763. The reversal of 40083749 is 94738004.

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 40083749 - 2¹⁶ = 40018213 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 (40083149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1054817 + ... + 1054854.

It is an arithmetic number, because the mean of its divisors is an integer number (10548360).

Almost surely, 2^40083749 is an apocalyptic number.

It is an amenable number.

40083749 is a deficient number, since it is larger than the sum of its proper divisors (2109691).

40083749 is a wasteful number, since it uses less digits than its factorization.

40083749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2109690.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 40083749 is about 6331.1727981473. The cubic root of 40083749 is about 342.2337042438.

The spelling of 40083749 in words is "forty million, eighty-three thousand, seven hundred forty-nine".