8390143390 has 16 divisors (see below), whose sum is σ = 15137305920. Its totient is φ = 3348268960.

The previous prime is 8390143387. The next prime is 8390143453. The reversal of 8390143390 is 933410938.

It is a super-2 number, since 2×8390143390² (a number of 21 digits) contains 22 as substring.

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, 969025 + ... + 977644.

It is an arithmetic number, because the mean of its divisors is an integer number (946081620).

Almost surely, 2^8390143390 is an apocalyptic number.

8390143390 is a deficient number, since it is larger than the sum of its proper divisors (6747162530).

8390143390 is a wasteful number, since it uses less digits than its factorization.

8390143390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1947107.

The product of its (nonzero) digits is 69984, while the sum is 40.

The square root of 8390143390 is about 91597.7258997187. The cubic root of 8390143390 is about 2031.9973054129.

The spelling of 8390143390 in words is "eight billion, three hundred ninety million, one hundred forty-three thousand, three hundred ninety".