1400900 has 18 divisors (see below), whose sum is σ = 3040170. Its totient is φ = 560320.

The previous prime is 1400899. The next prime is 1400923. The reversal of 1400900 is 90041.

It can be written as a sum of positive squares in 3 ways, for example, as 217156 + 1183744 = 466^2 + 1088^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6905 + ... + 7104.

2^1400900 is an apocalyptic number.

1400900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1400900 is an abundant number, since it is smaller than the sum of its proper divisors (1639270).

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

1400900 is a wasteful number, since it uses less digits than its factorization.

1400900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14023 (or 14016 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 1400900 is about 1183.5962149314. The cubic root of 1400900 is about 111.8928609790.

Adding to 1400900 its reverse (90041), we get a palindrome (1490941).

The spelling of 1400900 in words is "one million, four hundred thousand, nine hundred".