1390497 has 8 divisors (see below), whose sum is σ = 1904256. Its totient is φ = 901872.

The previous prime is 1390489. The next prime is 1390507. The reversal of 1390497 is 7940931.

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

It is not a de Polignac number, because 1390497 - 2³ = 1390489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1390457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6153 + ... + 6374.

It is an arithmetic number, because the mean of its divisors is an integer number (238032).

2^1390497 is an apocalyptic number.

It is an amenable number.

1390497 is a deficient number, since it is larger than the sum of its proper divisors (513759).

1390497 is a wasteful number, since it uses less digits than its factorization.

1390497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12567.

The product of its (nonzero) digits is 6804, while the sum is 33.

The square root of 1390497 is about 1179.1933683667. The cubic root of 1390497 is about 111.6152026411.

The spelling of 1390497 in words is "one million, three hundred ninety thousand, four hundred ninety-seven".