1400331421 has 4 divisors (see below), whose sum is σ = 1432897312. Its totient is φ = 1367765532.

The previous prime is 1400331371. The next prime is 1400331431. The reversal of 1400331421 is 1241330041.

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 a cyclic number.

It is not a de Polignac number, because 1400331421 - 2⁹ = 1400330909 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 (1400331431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16282881 + ... + 16282966.

It is an arithmetic number, because the mean of its divisors is an integer number (358224328).

Almost surely, 2^1400331421 is an apocalyptic number.

It is an amenable number.

1400331421 is a deficient number, since it is larger than the sum of its proper divisors (32565891).

1400331421 is an equidigital number, since it uses as much as digits as its factorization.

1400331421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32565890.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1400331421 is about 37421.0024050666. The cubic root of 1400331421 is about 1118.7772105946. Note that the first 3 decimals are identical.

Adding to 1400331421 its reverse (1241330041), we get a palindrome (2641661462).

The spelling of 1400331421 in words is "one billion, four hundred million, three hundred thirty-one thousand, four hundred twenty-one".