1400444002 has 4 divisors (see below), whose sum is σ = 2100666006. Its totient is φ = 700222000.

The previous prime is 1400443991. The next prime is 1400444009. The reversal of 1400444002 is 2004440041.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 743598361 + 656845641 = 27269^2 + 25629^2 .

It is a super-2 number, since 2×1400444002² = 3922486805475552008, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1400444009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 350110999 + ... + 350111002.

Almost surely, 2^1400444002 is an apocalyptic number.

1400444002 is a deficient number, since it is larger than the sum of its proper divisors (700222004).

1400444002 is an equidigital number, since it uses as much as digits as its factorization.

1400444002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 700222003.

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 1400444002 is about 37422.5066236884. The cubic root of 1400444002 is about 1118.8071915167.

Adding to 1400444002 its reverse (2004440041), we get a palindrome (3404884043).

The spelling of 1400444002 in words is "one billion, four hundred million, four hundred forty-four thousand, two".