9434139657 has 8 divisors (see below), whose sum is σ = 12635261184. Its totient is φ = 6261222288.

The previous prime is 9434139601. The next prime is 9434139661. The reversal of 9434139657 is 7569314349.

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

It is not a de Polignac number, because 9434139657 - 2¹⁰ = 9434138633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9434139857) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7050258 + ... + 7051595.

It is an arithmetic number, because the mean of its divisors is an integer number (1579407648).

Almost surely, 2^9434139657 is an apocalyptic number.

It is an amenable number.

9434139657 is a deficient number, since it is larger than the sum of its proper divisors (3201121527).

9434139657 is a wasteful number, since it uses less digits than its factorization.

9434139657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14102079.

The product of its digits is 2449440, while the sum is 51.

The square root of 9434139657 is about 97129.4994170154. The cubic root of 9434139657 is about 2113.0061787264.

The spelling of 9434139657 in words is "nine billion, four hundred thirty-four million, one hundred thirty-nine thousand, six hundred fifty-seven".