7940485390 has 16 divisors (see below), whose sum is σ = 14753934720. Its totient is φ = 3073736160.

The previous prime is 7940485361. The next prime is 7940485411. The reversal of 7940485390 is 935840497.

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, 12806925 + ... + 12807544.

It is an arithmetic number, because the mean of its divisors is an integer number (922120920).

Almost surely, 2^7940485390 is an apocalyptic number.

7940485390 is a deficient number, since it is larger than the sum of its proper divisors (6813449330).

7940485390 is a wasteful number, since it uses less digits than its factorization.

7940485390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25614507.

The product of its (nonzero) digits is 1088640, while the sum is 49.

The square root of 7940485390 is about 89109.4012436398. The cubic root of 7940485390 is about 1995.0280995115.

The spelling of 7940485390 in words is "seven billion, nine hundred forty million, four hundred eighty-five thousand, three hundred ninety".