1440497958 has 96 divisors (see below), whose sum is σ = 3363344640. Its totient is φ = 409305600.

The previous prime is 1440497953. The next prime is 1440498001. The reversal of 1440497958 is 8597940441.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a self number, because there is not a number n which added to its sum of digits gives 1440497958.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1440497953) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 756808 + ... + 758708.

It is an arithmetic number, because the mean of its divisors is an integer number (35034840).

Almost surely, 2^1440497958 is an apocalyptic number.

1440497958 is an abundant number, since it is smaller than the sum of its proper divisors (1922846682).

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

1440497958 is a wasteful number, since it uses less digits than its factorization.

1440497958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1982 (or 1965 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 51.

The square root of 1440497958 is about 37953.8925276446. The cubic root of 1440497958 is about 1129.3733853281.

The spelling of 1440497958 in words is "one billion, four hundred forty million, four hundred ninety-seven thousand, nine hundred fifty-eight".