3987426 has 8 divisors (see below), whose sum is σ = 7974864. Its totient is φ = 1329140.

The previous prime is 3987421. The next prime is 3987427. The reversal of 3987426 is 6247893.

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

3987426 is an admirable number.

It is a super-2 number, since 2×3987426² = 31799132210952, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3987421) 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, 332280 + ... + 332291.

It is an arithmetic number, because the mean of its divisors is an integer number (996858).

Almost surely, 2^3987426 is an apocalyptic number.

3987426 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

3987426 is a wasteful number, since it uses less digits than its factorization.

3987426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 664576.

The product of its digits is 72576, while the sum is 39.

The square root of 3987426 is about 1996.8540257114. The cubic root of 3987426 is about 158.5735974288.

The spelling of 3987426 in words is "three million, nine hundred eighty-seven thousand, four hundred twenty-six".