39154397243 has 8 divisors (see below), whose sum is σ = 42187269936. Its totient is φ = 36124524000.

The previous prime is 39154397213. The next prime is 39154397267. The reversal of 39154397243 is 34279345193.

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 39154397243 - 2⁶ = 39154397179 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 39154397191 and 39154397200.

It is not an unprimeable number, because it can be changed into a prime (39154397213) 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, 722708 + ... + 774993.

It is an arithmetic number, because the mean of its divisors is an integer number (5273408742).

Almost surely, 2^39154397243 is an apocalyptic number.

39154397243 is a deficient number, since it is larger than the sum of its proper divisors (3032872693).

39154397243 is a wasteful number, since it uses less digits than its factorization.

39154397243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1499725.

The product of its digits is 2449440, while the sum is 50.

The spelling of 39154397243 in words is "thirty-nine billion, one hundred fifty-four million, three hundred ninety-seven thousand, two hundred forty-three".