40492749 has 8 divisors (see below), whose sum is σ = 58898592. Its totient is φ = 24541040.

The previous prime is 40492741. The next prime is 40492783. The reversal of 40492749 is 94729404.

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 40492749 - 2³ = 40492741 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40492741) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 613494 + ... + 613559.

It is an arithmetic number, because the mean of its divisors is an integer number (7362324).

Almost surely, 2^40492749 is an apocalyptic number.

It is an amenable number.

40492749 is a deficient number, since it is larger than the sum of its proper divisors (18405843).

40492749 is a wasteful number, since it uses less digits than its factorization.

40492749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1227067.

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 40492749 is about 6363.3913128143. The cubic root of 40492749 is about 343.3937769182.

The spelling of 40492749 in words is "forty million, four hundred ninety-two thousand, seven hundred forty-nine".