3977223690 has 64 divisors (see below), whose sum is σ = 10430612352. Its totient is φ = 962553600.

The previous prime is 3977223629. The next prime is 3977223703. The reversal of 3977223690 is 963227793.

It is a super-2 number, since 2×3977223690² = 31636616560594432200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 192460 + ... + 212120.

It is an arithmetic number, because the mean of its divisors is an integer number (162978318).

Almost surely, 2^3977223690 is an apocalyptic number.

3977223690 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 3977223690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5215306176).

3977223690 is an abundant number, since it is smaller than the sum of its proper divisors (6453388662).

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

3977223690 is a wasteful number, since it uses less digits than its factorization.

3977223690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20295.

The product of its (nonzero) digits is 857304, while the sum is 48.

The square root of 3977223690 is about 63065.2336077494. The cubic root of 3977223690 is about 1584.3823869890.

The spelling of 3977223690 in words is "three billion, nine hundred seventy-seven million, two hundred twenty-three thousand, six hundred ninety".