1400621344 has 12 divisors (see below), whose sum is σ = 2757473334. Its totient is φ = 700310656.

The previous prime is 1400621311. The next prime is 1400621351. The reversal of 1400621344 is 4431260041.

It can be written as a sum of positive squares in only one way, i.e., 1116361744 + 284259600 = 33412^2 + 16860^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21884677 + ... + 21884740.

Almost surely, 2^1400621344 is an apocalyptic number.

It is an amenable number.

1400621344 is a deficient number, since it is larger than the sum of its proper divisors (1356851990).

1400621344 is an equidigital number, since it uses as much as digits as its factorization.

1400621344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43769427 (or 43769419 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 1400621344 is about 37424.8760051386. The cubic root of 1400621344 is about 1118.8544153805.

Adding to 1400621344 its reverse (4431260041), we get a palindrome (5831881385).

The spelling of 1400621344 in words is "one billion, four hundred million, six hundred twenty-one thousand, three hundred forty-four".