1397470 has 8 divisors (see below), whose sum is σ = 2515464. Its totient is φ = 558984.

The previous prime is 1397447. The next prime is 1397477. The reversal of 1397470 is 747931.

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

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1397477) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69864 + ... + 69883.

It is an arithmetic number, because the mean of its divisors is an integer number (314433).

2^1397470 is an apocalyptic number.

1397470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1397470 is a deficient number, since it is larger than the sum of its proper divisors (1117994).

1397470 is a wasteful number, since it uses less digits than its factorization.

1397470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139754.

The product of its (nonzero) digits is 5292, while the sum is 31.

The square root of 1397470 is about 1182.1463530376. The cubic root of 1397470 is about 111.8014658832.

The spelling of 1397470 in words is "one million, three hundred ninety-seven thousand, four hundred seventy".