3972611990 has 8 divisors (see below), whose sum is σ = 7150701600. Its totient is φ = 1589044792.

The previous prime is 3972611987. The next prime is 3972611999. The reversal of 3972611990 is 991162793.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3972611999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 198630590 + ... + 198630609.

It is an arithmetic number, because the mean of its divisors is an integer number (893837700).

Almost surely, 2^3972611990 is an apocalyptic number.

3972611990 is a deficient number, since it is larger than the sum of its proper divisors (3178089610).

3972611990 is a wasteful number, since it uses less digits than its factorization.

3972611990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397261206.

The product of its (nonzero) digits is 183708, while the sum is 47.

The square root of 3972611990 is about 63028.6600682578. The cubic root of 3972611990 is about 1583.7697718627.

The spelling of 3972611990 in words is "three billion, nine hundred seventy-two million, six hundred eleven thousand, nine hundred ninety".