1392945 has 8 divisors (see below), whose sum is σ = 2228736. Its totient is φ = 742896.

The previous prime is 1392943. The next prime is 1392953. The reversal of 1392945 is 5492931.

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

It is not a de Polignac number, because 1392945 - 2¹ = 1392943 is a prime.

It is a Curzon number.

1392945 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1392943) 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, 46417 + ... + 46446.

It is an arithmetic number, because the mean of its divisors is an integer number (278592).

2^1392945 is an apocalyptic number.

1392945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1392945 is a deficient number, since it is larger than the sum of its proper divisors (835791).

1392945 is an equidigital number, since it uses as much as digits as its factorization.

1392945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92871.

The product of its digits is 9720, while the sum is 33.

The square root of 1392945 is about 1180.2309096105. The cubic root of 1392945 is about 111.6806645654.

The spelling of 1392945 in words is "one million, three hundred ninety-two thousand, nine hundred forty-five".