8407640834 has 8 divisors (see below), whose sum is σ = 12618845820. Its totient is φ = 4201358896.

The previous prime is 8407640831. The next prime is 8407640837. The reversal of 8407640834 is 4380467048.

It is an interprime number because it is at equal distance from previous prime (8407640831) and next prime (8407640837).

It can be written as a sum of positive squares in 2 ways, for example, as 7930436809 + 477204025 = 89053^2 + 21845^2 .

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

It is not an unprimeable number, because it can be changed into a prime (8407640831) 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, 1226489 + ... + 1233324.

Almost surely, 2^8407640834 is an apocalyptic number.

8407640834 is a deficient number, since it is larger than the sum of its proper divisors (4211204986).

8407640834 is a wasteful number, since it uses less digits than its factorization.

8407640834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2461524.

The product of its (nonzero) digits is 516096, while the sum is 44.

The square root of 8407640834 is about 91693.1885910835. The cubic root of 8407640834 is about 2033.4088852395.

The spelling of 8407640834 in words is "eight billion, four hundred seven million, six hundred forty thousand, eight hundred thirty-four".