4050921 has 16 divisors (see below), whose sum is σ = 6441984. Its totient is φ = 2213904.

The previous prime is 4050899. The next prime is 4050931. The reversal of 4050921 is 1290504.

It is not a de Polignac number, because 4050921 - 2⁷ = 4050793 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (4050931) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3711 + ... + 4676.

It is an arithmetic number, because the mean of its divisors is an integer number (402624).

Almost surely, 2^4050921 is an apocalyptic number.

It is an amenable number.

4050921 is a deficient number, since it is larger than the sum of its proper divisors (2391063).

4050921 is a wasteful number, since it uses less digits than its factorization.

4050921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8420.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 4050921 is about 2012.6899910319. The cubic root of 4050921 is about 159.4108672831.

Adding to 4050921 its product of nonzero digits (360), we get a triangular number (4051281 = T₂₈₄₆).

The spelling of 4050921 in words is "four million, fifty thousand, nine hundred twenty-one".