8431694940 has 24 divisors (see below), whose sum is σ = 23608746000. Its totient is φ = 2248451968.

The previous prime is 8431694881. The next prime is 8431694941. The reversal of 8431694940 is 494961348.

It is a happy number.

It is a super-2 number, since 2×8431694940² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 8431694940.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8431694941) 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, 70264065 + ... + 70264184.

It is an arithmetic number, because the mean of its divisors is an integer number (983697750).

Almost surely, 2^8431694940 is an apocalyptic number.

It is an amenable number.

8431694940 is an abundant number, since it is smaller than the sum of its proper divisors (15177051060).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8431694940 is a wasteful number, since it uses less digits than its factorization.

8431694940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140528261 (or 140528259 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 48.

The square root of 8431694940 is about 91824.2611731780. The cubic root of 8431694940 is about 2035.3462206762.

The spelling of 8431694940 in words is "eight billion, four hundred thirty-one million, six hundred ninety-four thousand, nine hundred forty".