1400494521 has 16 divisors (see below), whose sum is σ = 1876881600. Its totient is φ = 928898880.

The previous prime is 1400494519. The next prime is 1400494531. The reversal of 1400494521 is 1254940041.

It is not a de Polignac number, because 1400494521 - 2¹ = 1400494519 is a prime.

It is a super-2 number, since 2×1400494521² = 3922769806702038882, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1400494531) 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 15 ways as a sum of consecutive naturals, for example, 548155 + ... + 550703.

It is an arithmetic number, because the mean of its divisors is an integer number (117305100).

Almost surely, 2^1400494521 is an apocalyptic number.

It is an amenable number.

1400494521 is a deficient number, since it is larger than the sum of its proper divisors (476387079).

1400494521 is a wasteful number, since it uses less digits than its factorization.

1400494521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3416.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 1400494521 is about 37423.1815991105. The cubic root of 1400494521 is about 1118.8206444742.

The spelling of 1400494521 in words is "one billion, four hundred million, four hundred ninety-four thousand, five hundred twenty-one".