3966455740 has 48 divisors (see below), whose sum is σ = 8976487968. Its totient is φ = 1463526144.

The previous prime is 3966455729. The next prime is 3966455741. The reversal of 3966455740 is 475546693.

It is a happy number.

It is a super-2 number, since 2×3966455740² = 31465542274757895200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3966455741) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 446179 + ... + 454981.

It is an arithmetic number, because the mean of its divisors is an integer number (187010166).

Almost surely, 2^3966455740 is an apocalyptic number.

It is an amenable number.

3966455740 is an abundant number, since it is smaller than the sum of its proper divisors (5010032228).

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

3966455740 is a wasteful number, since it uses less digits than its factorization.

3966455740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10558 (or 10556 counting only the distinct ones).

The product of its (nonzero) digits is 2721600, while the sum is 49.

The square root of 3966455740 is about 62979.8042232587. The cubic root of 3966455740 is about 1582.9512404193.

The spelling of 3966455740 in words is "three billion, nine hundred sixty-six million, four hundred fifty-five thousand, seven hundred forty".