3951438 has 8 divisors (see below), whose sum is σ = 7902888. Its totient is φ = 1317144.

The previous prime is 3951427. The next prime is 3951443. The reversal of 3951438 is 8341593.

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

3951438 is an admirable number.

It is a super-2 number, since 2×3951438² = 31227724535688, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3951399 and 3951408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 329281 + ... + 329292.

It is an arithmetic number, because the mean of its divisors is an integer number (987861).

Almost surely, 2^3951438 is an apocalyptic number.

3951438 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.

3951438 is a wasteful number, since it uses less digits than its factorization.

3951438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 658578.

The product of its digits is 12960, while the sum is 33.

The square root of 3951438 is about 1987.8224266770. The cubic root of 3951438 is about 158.0950931061.

The spelling of 3951438 in words is "three million, nine hundred fifty-one thousand, four hundred thirty-eight".