1400814621 has 8 divisors (see below), whose sum is σ = 2075280960. Its totient is φ = 933876396.

The previous prime is 1400814619. The next prime is 1400814629. The reversal of 1400814621 is 1264180041.

It is a happy number.

It is not a de Polignac number, because 1400814621 - 2¹ = 1400814619 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 51882023 = 1400814621 / (1 + 4 + 0 + 0 + 8 + 1 + 4 + 6 + 2 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1400814629) 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 7 ways as a sum of consecutive naturals, for example, 25940985 + ... + 25941038.

It is an arithmetic number, because the mean of its divisors is an integer number (259410120).

Almost surely, 2^1400814621 is an apocalyptic number.

It is an amenable number.

1400814621 is a deficient number, since it is larger than the sum of its proper divisors (674466339).

1400814621 is an equidigital number, since it uses as much as digits as its factorization.

1400814621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51882032 (or 51882026 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 1400814621 is about 37427.4581156669. The cubic root of 1400814621 is about 1118.9058779878.

Adding to 1400814621 its reverse (1264180041), we get a palindrome (2664994662).

The spelling of 1400814621 in words is "one billion, four hundred million, eight hundred fourteen thousand, six hundred twenty-one".