1478739 has 16 divisors (see below), whose sum is σ = 2131200. Its totient is φ = 909216.

The previous prime is 1478723. The next prime is 1478759. The reversal of 1478739 is 9378741.

It is not a de Polignac number, because 1478739 - 2⁴ = 1478723 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1478697 and 1478706.

It is not an unprimeable number, because it can be changed into a prime (1478759) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1632 + ... + 2370.

It is an arithmetic number, because the mean of its divisors is an integer number (133200).

2^1478739 is an apocalyptic number.

1478739 is a deficient number, since it is larger than the sum of its proper divisors (652461).

1478739 is a wasteful number, since it uses less digits than its factorization.

1478739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 794.

The product of its digits is 42336, while the sum is 39.

The square root of 1478739 is about 1216.0341278106. The cubic root of 1478739 is about 113.9280093338.

The spelling of 1478739 in words is "one million, four hundred seventy-eight thousand, seven hundred thirty-nine".