3487791 has 4 divisors (see below), whose sum is σ = 4650392. Its totient is φ = 2325192.

The previous prime is 3487787. The next prime is 3487793. The reversal of 3487791 is 1977843.

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

It is not a de Polignac number, because 3487791 - 2² = 3487787 is a prime.

It is an Ulam number.

It is a D-number.

It is a Duffinian number.

3487791 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3487793) 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, 581296 + ... + 581301.

It is an arithmetic number, because the mean of its divisors is an integer number (1162598).

Almost surely, 2^3487791 is an apocalyptic number.

3487791 is a deficient number, since it is larger than the sum of its proper divisors (1162601).

3487791 is a wasteful number, since it uses less digits than its factorization.

3487791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1162600.

The product of its digits is 42336, while the sum is 39.

The square root of 3487791 is about 1867.5628503480. The cubic root of 3487791 is about 151.6527014205.

It can be divided in two parts, 3487 and 791, that added together give a triangular number (4278 = T₉₂).

The spelling of 3487791 in words is "three million, four hundred eighty-seven thousand, seven hundred ninety-one".