1400430444 has 24 divisors (see below), whose sum is σ = 3734481408. Its totient is φ = 400122960.

The previous prime is 1400430443. The next prime is 1400430457. The reversal of 1400430444 is 4440340041.

It is a super-2 number, since 2×1400430444² = 3922410856964074272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1400430443) 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, 8335812 + ... + 8335979.

It is an arithmetic number, because the mean of its divisors is an integer number (155603392).

Almost surely, 2^1400430444 is an apocalyptic number.

1400430444 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1400430444 is an abundant number, since it is smaller than the sum of its proper divisors (2334050964).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1400430444 is a wasteful number, since it uses less digits than its factorization.

1400430444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16671805 (or 16671803 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 1400430444 is about 37422.3254755767. The cubic root of 1400430444 is about 1118.8035810339.

Adding to 1400430444 its reverse (4440340041), we get a palindrome (5840770485).

The spelling of 1400430444 in words is "one billion, four hundred million, four hundred thirty thousand, four hundred forty-four".