3551949 has 24 divisors (see below), whose sum is σ = 5491200. Its totient is φ = 2207520.

The previous prime is 3551941. The next prime is 3551957. The reversal of 3551949 is 9491553.

It is an interprime number because it is at equal distance from previous prime (3551941) and next prime (3551957).

It is not a de Polignac number, because 3551949 - 2³ = 3551941 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3551941) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7872 + ... + 8310.

It is an arithmetic number, because the mean of its divisors is an integer number (228800).

Almost surely, 2^3551949 is an apocalyptic number.

It is an amenable number.

3551949 is a deficient number, since it is larger than the sum of its proper divisors (1939251).

3551949 is a wasteful number, since it uses less digits than its factorization.

3551949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505 (or 502 counting only the distinct ones).

The product of its digits is 24300, while the sum is 36.

The square root of 3551949 is about 1884.6615080698. The cubic root of 3551949 is about 152.5769422713.

It can be divided in two parts, 355 and 1949, that added together give a square (2304 = 48²).

The spelling of 3551949 in words is "three million, five hundred fifty-one thousand, nine hundred forty-nine".