8431390045 has 8 divisors (see below), whose sum is σ = 10895950296. Its totient is φ = 6226257216.

The previous prime is 8431390001. The next prime is 8431390063. The reversal of 8431390045 is 5400931348.

It can be written as a sum of positive squares in 4 ways, for example, as 103184964 + 8328205081 = 10158^2 + 91259^2 .

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 8431390045 - 2¹³ = 8431381853 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8431389986 and 8431390013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64856782 + ... + 64856911.

It is an arithmetic number, because the mean of its divisors is an integer number (1361993787).

Almost surely, 2^8431390045 is an apocalyptic number.

It is an amenable number.

8431390045 is a deficient number, since it is larger than the sum of its proper divisors (2464560251).

8431390045 is a wasteful number, since it uses less digits than its factorization.

8431390045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129713711.

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 8431390045 is about 91822.6009487860. The cubic root of 8431390045 is about 2035.3216872789.

The spelling of 8431390045 in words is "eight billion, four hundred thirty-one million, three hundred ninety thousand, forty-five".