3945554 has 4 divisors (see below), whose sum is σ = 5918334. Its totient is φ = 1972776.

The previous prime is 3945527. The next prime is 3945607. The reversal of 3945554 is 4555493.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 3940225 + 5329 = 1985^2 + 73^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 986387 + ... + 986390.

Almost surely, 2^3945554 is an apocalyptic number.

3945554 is a deficient number, since it is larger than the sum of its proper divisors (1972780).

3945554 is a wasteful number, since it uses less digits than its factorization.

3945554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1972779.

The product of its digits is 54000, while the sum is 35.

The square root of 3945554 is about 1986.3418638291. The cubic root of 3945554 is about 158.0165821404.

The spelling of 3945554 in words is "three million, nine hundred forty-five thousand, five hundred fifty-four".