1400444031 has 8 divisors (see below), whose sum is σ = 2134009984. Its totient is φ = 800253720.

The previous prime is 1400444029. The next prime is 1400444047. The reversal of 1400444031 is 1304440041.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1400444031 - 2¹ = 1400444029 is a prime.

It is a super-2 number, since 2×1400444031² = 3922486967927057922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 66687811 = 1400444031 / (1 + 4 + 0 + 0 + 4 + 4 + 4 + 0 + 3 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1400443989 and 1400444007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1400444051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33343885 + ... + 33343926.

It is an arithmetic number, because the mean of its divisors is an integer number (266751248).

Almost surely, 2^1400444031 is an apocalyptic number.

1400444031 is a deficient number, since it is larger than the sum of its proper divisors (733565953).

1400444031 is an equidigital number, since it uses as much as digits as its factorization.

1400444031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66687821.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 1400444031 is about 37422.5070111557. The cubic root of 1400444031 is about 1118.8071992394.

Adding to 1400444031 its reverse (1304440041), we get a palindrome (2704884072).

The spelling of 1400444031 in words is "one billion, four hundred million, four hundred forty-four thousand, thirty-one".