1401449440 has 24 divisors (see below), whose sum is σ = 3310924680. Its totient is φ = 560579712.

The previous prime is 1401449429. The next prime is 1401449459. The reversal of 1401449440 is 449441041.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4379370 + ... + 4379689.

It is an arithmetic number, because the mean of its divisors is an integer number (137955195).

Almost surely, 2^1401449440 is an apocalyptic number.

1401449440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1401449440 is an abundant number, since it is smaller than the sum of its proper divisors (1909475240).

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

1401449440 is an equidigital number, since it uses as much as digits as its factorization.

1401449440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8759074 (or 8759066 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 1401449440 is about 37435.9378138174. The cubic root of 1401449440 is about 1119.0748738061.

The spelling of 1401449440 in words is "one billion, four hundred one million, four hundred forty-nine thousand, four hundred forty".