3659979990 has 16 divisors (see below), whose sum is σ = 8783952048. Its totient is φ = 975994656.

The previous prime is 3659979979. The next prime is 3659979991. The reversal of 3659979990 is 999799563.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3659979991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60999637 + ... + 60999696.

It is an arithmetic number, because the mean of its divisors is an integer number (548997003).

Almost surely, 2^3659979990 is an apocalyptic number.

3659979990 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

3659979990 is an abundant number, since it is smaller than the sum of its proper divisors (5123972058).

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

3659979990 is a wasteful number, since it uses less digits than its factorization.

3659979990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121999343.

The product of its (nonzero) digits is 37200870, while the sum is 66.

The square root of 3659979990 is about 60497.7684712420. The cubic root of 3659979990 is about 1541.0837356799.

The spelling of 3659979990 in words is "three billion, six hundred fifty-nine million, nine hundred seventy-nine thousand, nine hundred ninety".