40729492 has 6 divisors (see below), whose sum is σ = 71276618. Its totient is φ = 20364744.

The previous prime is 40729487. The next prime is 40729571. The reversal of 40729492 is 29492704.

It can be written as a sum of positive squares in only one way, i.e., 21492496 + 19236996 = 4636^2 + 4386^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5091183 + ... + 5091190.

Almost surely, 2^40729492 is an apocalyptic number.

It is an amenable number.

40729492 is a deficient number, since it is larger than the sum of its proper divisors (30547126).

40729492 is a wasteful number, since it uses less digits than its factorization.

40729492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10182377 (or 10182375 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 40729492 is about 6381.9661547207. The cubic root of 40729492 is about 344.0617002181.

The spelling of 40729492 in words is "forty million, seven hundred twenty-nine thousand, four hundred ninety-two".