1390051 has 8 divisors (see below), whose sum is σ = 1562400. Its totient is φ = 1227072.

The previous prime is 1390043. The next prime is 1390069. The reversal of 1390051 is 1500931.

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 1390051 - 2³ = 1390043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1391051) 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, 2026 + ... + 2623.

It is an arithmetic number, because the mean of its divisors is an integer number (195300).

2^1390051 is an apocalyptic number.

1390051 is a deficient number, since it is larger than the sum of its proper divisors (172349).

1390051 is a wasteful number, since it uses less digits than its factorization.

1390051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4685.

The product of its (nonzero) digits is 135, while the sum is 19.

The square root of 1390051 is about 1179.0042408745. The cubic root of 1390051 is about 111.6032678908.

Adding to 1390051 its reverse (1500931), we get a palindrome (2890982).

The spelling of 1390051 in words is "one million, three hundred ninety thousand, fifty-one".