3977573 has 2 divisors, whose sum is σ = 3977574. Its totient is φ = 3977572.

The previous prime is 3977569. The next prime is 3977587. The reversal of 3977573 is 3757793.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3232804 + 744769 = 1798^2 + 863^2 .

It is a cyclic number.

It is not a de Polignac number, because 3977573 - 2² = 3977569 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3977573.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3977503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1988786 + 1988787.

It is an arithmetic number, because the mean of its divisors is an integer number (1988787).

Almost surely, 2^3977573 is an apocalyptic number.

It is an amenable number.

3977573 is a deficient number, since it is larger than the sum of its proper divisors (1).

3977573 is an equidigital number, since it uses as much as digits as its factorization.

3977573 is an evil number, because the sum of its binary digits is even.

The product of its digits is 138915, while the sum is 41.

The square root of 3977573 is about 1994.3853689796. The cubic root of 3977573 is about 158.4428769797.

The spelling of 3977573 in words is "three million, nine hundred seventy-seven thousand, five hundred seventy-three".