1400346644 has 12 divisors (see below), whose sum is σ = 2594760084. Its totient is φ = 658986624.

The previous prime is 1400346641. The next prime is 1400346691. The reversal of 1400346644 is 4466430041.

It can be written as a sum of positive squares in 2 ways, for example, as 1064064400 + 336282244 = 32620^2 + 18338^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1400346644.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1400346641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10296599 + ... + 10296734.

It is an arithmetic number, because the mean of its divisors is an integer number (216230007).

Almost surely, 2^1400346644 is an apocalyptic number.

It is an amenable number.

1400346644 is a deficient number, since it is larger than the sum of its proper divisors (1194413440).

1400346644 is a wasteful number, since it uses less digits than its factorization.

1400346644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20593354 (or 20593352 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 32.

The square root of 1400346644 is about 37421.2058063339. The cubic root of 1400346644 is about 1118.7812646548.

Adding to 1400346644 its reverse (4466430041), we get a palindrome (5866776685).

The spelling of 1400346644 in words is "one billion, four hundred million, three hundred forty-six thousand, six hundred forty-four".