1390147 has 8 divisors (see below), whose sum is σ = 1552320. Its totient is φ = 1233960.

The previous prime is 1390121. The next prime is 1390157. The reversal of 1390147 is 7410931.

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

It is a cyclic number.

It is not a de Polignac number, because 1390147 - 2⁷ = 1390019 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1390117) 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, 997 + ... + 1942.

It is an arithmetic number, because the mean of its divisors is an integer number (194040).

2^1390147 is an apocalyptic number.

1390147 is a deficient number, since it is larger than the sum of its proper divisors (162173).

1390147 is a wasteful number, since it uses less digits than its factorization.

1390147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2993.

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 1390147 is about 1179.0449524933. The cubic root of 1390147 is about 111.6058370212.

The spelling of 1390147 in words is "one million, three hundred ninety thousand, one hundred forty-seven".