40429137 has 16 divisors (see below), whose sum is σ = 61816832. Its totient is φ = 23023440.

The previous prime is 40429133. The next prime is 40429139. The reversal of 40429137 is 73192404.

It is a happy number.

It is not a de Polignac number, because 40429137 - 2² = 40429133 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40429133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3312 + ... + 9582.

It is an arithmetic number, because the mean of its divisors is an integer number (3863552).

Almost surely, 2^40429137 is an apocalyptic number.

It is an amenable number.

40429137 is a deficient number, since it is larger than the sum of its proper divisors (21387695).

40429137 is a wasteful number, since it uses less digits than its factorization.

40429137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6588.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 40429137 is about 6358.3910700743. The cubic root of 40429137 is about 343.2138647606.

The spelling of 40429137 in words is "forty million, four hundred twenty-nine thousand, one hundred thirty-seven".