400133001 has 16 divisors (see below), whose sum is σ = 557504640. Its totient is φ = 254791680.

The previous prime is 400132973. The next prime is 400133009. The reversal of 400133001 is 100331004.

It is not a de Polignac number, because 400133001 - 2⁵ = 400132969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (400133009) 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, 49291 + ... + 56831.

It is an arithmetic number, because the mean of its divisors is an integer number (34844040).

Almost surely, 2^400133001 is an apocalyptic number.

It is an amenable number.

400133001 is a deficient number, since it is larger than the sum of its proper divisors (157371639).

400133001 is a wasteful number, since it uses less digits than its factorization.

400133001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8336.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 400133001 is about 20003.3247486512. The cubic root of 400133001 is about 736.8879539909.

Adding to 400133001 its reverse (100331004), we get a palindrome (500464005).

The spelling of 400133001 in words is "four hundred million, one hundred thirty-three thousand, one".