7039890540 has 72 divisors (see below), whose sum is σ = 21387693600. Its totient is φ = 1874371584.

The previous prime is 7039890523. The next prime is 7039890541. The reversal of 7039890540 is 450989307.

7039890540 is a `hidden beast` number, since 70 + 39 + 8 + 9 + 0 + 540 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (7039890541) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 86236 + ... + 146684.

It is an arithmetic number, because the mean of its divisors is an integer number (297051300).

Almost surely, 2^7039890540 is an apocalyptic number.

It is an amenable number.

7039890540 is an abundant number, since it is smaller than the sum of its proper divisors (14347803060).

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

7039890540 is a wasteful number, since it uses less digits than its factorization.

7039890540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61111 (or 61106 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The square root of 7039890540 is about 83904.0555634827. The cubic root of 7039890540 is about 1916.5580096521.

The spelling of 7039890540 in words is "seven billion, thirty-nine million, eight hundred ninety thousand, five hundred forty".