1079749440 has 560 divisors, whose sum is σ = 4797454464. Its totient is φ = 223948800.

The previous prime is 1079749439. The next prime is 1079749453. The reversal of 1079749440 is 449479701.

It is a tau number, because it is divible by the number of its divisors (560).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1995570 + ... + 1996110.

Almost surely, 2^1079749440 is an apocalyptic number.

1079749440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1079749440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2398727232).

1079749440 is an abundant number, since it is smaller than the sum of its proper divisors (3717705024).

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

1079749440 is a wasteful number, since it uses less digits than its factorization.

1079749440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 588 (or 569 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The square root of 1079749440 is about 32859.5410801794. The cubic root of 1079749440 is about 1025.9062189855.

The spelling of 1079749440 in words is "one billion, seventy-nine million, seven hundred forty-nine thousand, four hundred forty".