3820401 has 12 divisors (see below), whose sum is σ = 5943028. Its totient is φ = 2350944.

The previous prime is 3820391. The next prime is 3820423. The reversal of 3820401 is 1040283.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 998001 + 2822400 = 999^2 + 1680^2 .

It is not a de Polignac number, because 3820401 - 2¹³ = 3812209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3820441) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16210 + ... + 16443.

Almost surely, 2^3820401 is an apocalyptic number.

It is an amenable number.

3820401 is a deficient number, since it is larger than the sum of its proper divisors (2122627).

3820401 is a wasteful number, since it uses less digits than its factorization.

3820401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32672 (or 32669 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 3820401 is about 1954.5846106014. The cubic root of 3820401 is about 156.3278362060.

Adding to 3820401 its reverse (1040283), we get a palindrome (4860684).

The spelling of 3820401 in words is "three million, eight hundred twenty thousand, four hundred one".