1445739 has 8 divisors (see below), whose sum is σ = 1942080. Its totient is φ = 956616.

The previous prime is 1445723. The next prime is 1445749. The reversal of 1445739 is 9375441.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1445739 - 2⁴ = 1445723 is a prime.

It is a super-2 number, since 2×1445739² = 4180322512242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1445749) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1317 + ... + 2150.

It is an arithmetic number, because the mean of its divisors is an integer number (242760).

2^1445739 is an apocalyptic number.

1445739 is a deficient number, since it is larger than the sum of its proper divisors (496341).

1445739 is a wasteful number, since it uses less digits than its factorization.

1445739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3609.

The product of its digits is 15120, while the sum is 33.

The square root of 1445739 is about 1202.3888722040. The cubic root of 1445739 is about 113.0741414396.

It can be divided in two parts, 14 and 45739, that added together give a triangular number (45753 = T₃₀₂).

The spelling of 1445739 in words is "one million, four hundred forty-five thousand, seven hundred thirty-nine".