1447400400 has 120 divisors (see below), whose sum is σ = 4909310784. Its totient is φ = 363264000.

The previous prime is 1447400399. The next prime is 1447400401. The reversal of 1447400400 is 40047441.

It is an interprime number because it is at equal distance from previous prime (1447400399) and next prime (1447400401).

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1447400401) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15076 + ... + 55875.

Almost surely, 2^1447400400 is an apocalyptic number.

1447400400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1447400400 is an abundant number, since it is smaller than the sum of its proper divisors (3461910384).

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

1447400400 is a wasteful number, since it uses less digits than its factorization.

1447400400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70989 (or 70978 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 24.

The square root of 1447400400 is about 38044.7157960209. The cubic root of 1447400400 is about 1131.1743866517.

Adding to 1447400400 its reverse (40047441), we get a palindrome (1487447841).

The spelling of 1447400400 in words is "one billion, four hundred forty-seven million, four hundred thousand, four hundred".