1400809634 has 16 divisors (see below), whose sum is σ = 2406412800. Its totient is φ = 599090784.

The previous prime is 1400809609. The next prime is 1400809651. The reversal of 1400809634 is 4369080041.

It is a junction number, because it is equal to n+sod(n) for n = 1400809594 and 1400809603.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97739 + ... + 111150.

It is an arithmetic number, because the mean of its divisors is an integer number (150400800).

Almost surely, 2^1400809634 is an apocalyptic number.

1400809634 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1400809634 is a deficient number, since it is larger than the sum of its proper divisors (1005603166).

1400809634 is a wasteful number, since it uses less digits than its factorization.

1400809634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209377.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 1400809634 is about 37427.3914933969. The cubic root of 1400809634 is about 1118.9045501913.

Adding to 1400809634 its reverse (4369080041), we get a palindrome (5769889675).

The spelling of 1400809634 in words is "one billion, four hundred million, eight hundred nine thousand, six hundred thirty-four".