1400144213 has 6 divisors (see below), whose sum is σ = 1516132674. Its totient is φ = 1292440656.

The previous prime is 1400144197. The next prime is 1400144267. The reversal of 1400144213 is 3124410041.

It can be written as a sum of positive squares in 3 ways, for example, as 41705764 + 1358438449 = 6458^2 + 36857^2 .

It is not a de Polignac number, because 1400144213 - 2⁴ = 1400144197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1400144813) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4142270 + ... + 4142607.

It is an arithmetic number, because the mean of its divisors is an integer number (252688779).

Almost surely, 2^1400144213 is an apocalyptic number.

1400144213 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1400144213 is a deficient number, since it is larger than the sum of its proper divisors (115988461).

1400144213 is an equidigital number, since it uses as much as digits as its factorization.

1400144213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8284903 (or 8284890 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1400144213 is about 37418.5009453880. The cubic root of 1400144213 is about 1118.7273525455.

Adding to 1400144213 its reverse (3124410041), we get a palindrome (4524554254).

The spelling of 1400144213 in words is "one billion, four hundred million, one hundred forty-four thousand, two hundred thirteen".