40139252905 has 8 divisors (see below), whose sum is σ = 48170049984. Its totient is φ = 32109438000.

The previous prime is 40139252903. The next prime is 40139252947. The reversal of 40139252905 is 50925293104.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40139252905 - 2¹ = 40139252903 is a prime.

It is a super-2 number, since 2×40139252905² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40139252903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152421 + ... + 321730.

It is an arithmetic number, because the mean of its divisors is an integer number (6021256248).

Almost surely, 2^40139252905 is an apocalyptic number.

It is an amenable number.

40139252905 is a deficient number, since it is larger than the sum of its proper divisors (8030797079).

40139252905 is a wasteful number, since it uses less digits than its factorization.

40139252905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491087.

The product of its (nonzero) digits is 97200, while the sum is 40.

The spelling of 40139252905 in words is "forty billion, one hundred thirty-nine million, two hundred fifty-two thousand, nine hundred five".