1400402001 has 4 divisors (see below), whose sum is σ = 1867202672. Its totient is φ = 933601332.

The previous prime is 1400401999. The next prime is 1400402023. The reversal of 1400402001 is 1002040041.

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.

It is not a de Polignac number, because 1400402001 - 2¹ = 1400401999 is a prime.

It is a super-3 number, since 3×1400402001³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1400402501) 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, 233400331 + ... + 233400336.

It is an arithmetic number, because the mean of its divisors is an integer number (466800668).

Almost surely, 2^1400402001 is an apocalyptic number.

It is an amenable number.

1400402001 is a deficient number, since it is larger than the sum of its proper divisors (466800671).

1400402001 is an equidigital number, since it uses as much as digits as its factorization.

1400402001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 466800670.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 1400402001 is about 37421.9454464890. The cubic root of 1400402001 is about 1118.7960066138.

Adding to 1400402001 its reverse (1002040041), we get a palindrome (2402442042).

The spelling of 1400402001 in words is "one billion, four hundred million, four hundred two thousand, one".