1390977 has 12 divisors (see below), whose sum is σ = 2296320. Its totient is φ = 794808.

The previous prime is 1390969. The next prime is 1390979. The reversal of 1390977 is 7790931.

It is not a de Polignac number, because 1390977 - 2³ = 1390969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1390979) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10977 + ... + 11102.

It is an arithmetic number, because the mean of its divisors is an integer number (191360).

2^1390977 is an apocalyptic number.

It is an amenable number.

1390977 is a deficient number, since it is larger than the sum of its proper divisors (905343).

1390977 is a wasteful number, since it uses less digits than its factorization.

1390977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22092 (or 22089 counting only the distinct ones).

The product of its (nonzero) digits is 11907, while the sum is 36.

The square root of 1390977 is about 1179.3968797652. The cubic root of 1390977 is about 111.6280443645.

The spelling of 1390977 in words is "one million, three hundred ninety thousand, nine hundred seventy-seven".