3957478 has 8 divisors (see below), whose sum is σ = 6784272. Its totient is φ = 1696056.

The previous prime is 3957451. The next prime is 3957479. The reversal of 3957478 is 8747593.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3957479) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 141325 + ... + 141352.

It is an arithmetic number, because the mean of its divisors is an integer number (848034).

Almost surely, 2^3957478 is an apocalyptic number.

3957478 is a deficient number, since it is larger than the sum of its proper divisors (2826794).

3957478 is a wasteful number, since it uses less digits than its factorization.

3957478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282686.

The product of its digits is 211680, while the sum is 43.

The square root of 3957478 is about 1989.3410969464. The cubic root of 3957478 is about 158.1756045754.

The spelling of 3957478 in words is "three million, nine hundred fifty-seven thousand, four hundred seventy-eight".