33400401 has 4 divisors (see below), whose sum is σ = 44533872. Its totient is φ = 22266932.

The previous prime is 33400399. The next prime is 33400403. The reversal of 33400401 is 10400433.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10400433 = 3 ⋅3466811.

It is an interprime number because it is at equal distance from previous prime (33400399) and next prime (33400403).

It is a cyclic number.

It is not a de Polignac number, because 33400401 - 2¹ = 33400399 is a prime.

It is a super-2 number, since 2×33400401² = 2231173573921602, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (33400403) 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, 5566731 + ... + 5566736.

It is an arithmetic number, because the mean of its divisors is an integer number (11133468).

Almost surely, 2^33400401 is an apocalyptic number.

It is an amenable number.

33400401 is a deficient number, since it is larger than the sum of its proper divisors (11133471).

33400401 is a wasteful number, since it uses less digits than its factorization.

33400401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11133470.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 33400401 is about 5779.3080035589. The cubic root of 33400401 is about 322.0454940028.

Adding to 33400401 its reverse (10400433), we get a palindrome (43800834).

The spelling of 33400401 in words is "thirty-three million, four hundred thousand, four hundred one".