1209053897400 has 96 divisors (see below), whose sum is σ = 3748238847360. Its totient is φ = 322399597440.

The previous prime is 1209053897383. The next prime is 1209053897489. The reversal of 1209053897400 is 47983509021.

It is a super-2 number, since 2×1209053897400² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1209053897400.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21189309 + ... + 21246291.

It is an arithmetic number, because the mean of its divisors is an integer number (39044154660).

Almost surely, 2^{1209053897400} is an apocalyptic number.

1209053897400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1209053897400 is an abundant number, since it is smaller than the sum of its proper divisors (2539184949960).

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

1209053897400 is a wasteful number, since it uses less digits than its factorization.

1209053897400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92365 (or 92356 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 48.

The spelling of 1209053897400 in words is "one trillion, two hundred nine billion, fifty-three million, eight hundred ninety-seven thousand, four hundred".