40039357929 has 4 divisors (see below), whose sum is σ = 53385810576. Its totient is φ = 26692905284.

The previous prime is 40039357889. The next prime is 40039357957. The reversal of 40039357929 is 92975393004.

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 40039357929 - 2⁹ = 40039357417 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40039757929) 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, 6673226319 + ... + 6673226324.

It is an arithmetic number, because the mean of its divisors is an integer number (13346452644).

Almost surely, 2^40039357929 is an apocalyptic number.

It is an amenable number.

40039357929 is a deficient number, since it is larger than the sum of its proper divisors (13346452647).

40039357929 is a wasteful number, since it uses less digits than its factorization.

40039357929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13346452646.

The product of its (nonzero) digits is 1837080, while the sum is 51.

The spelling of 40039357929 in words is "forty billion, thirty-nine million, three hundred fifty-seven thousand, nine hundred twenty-nine".