3699421 has 16 divisors (see below), whose sum is σ = 4347648. Its totient is φ = 3110400.

The previous prime is 3699413. The next prime is 3699427. The reversal of 3699421 is 1249963.

3699421 = 81² + 82² + ... + 226².

It is a 5-Lehmer number, since φ(3699421) divides (3699421-1)⁵.

It is a cyclic number.

It is not a de Polignac number, because 3699421 - 2³ = 3699413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3699427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13516 + ... + 13786.

It is an arithmetic number, because the mean of its divisors is an integer number (271728).

Almost surely, 2^3699421 is an apocalyptic number.

It is an amenable number.

3699421 is a deficient number, since it is larger than the sum of its proper divisors (648227).

3699421 is a wasteful number, since it uses less digits than its factorization.

3699421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372.

The product of its digits is 11664, while the sum is 34.

The square root of 3699421 is about 1923.3878963953. The cubic root of 3699421 is about 154.6599691371.

The spelling of 3699421 in words is "three million, six hundred ninety-nine thousand, four hundred twenty-one".