1375407 has 24 divisors (see below), whose sum is σ = 2245040. Its totient is φ = 831600.

The previous prime is 1375379. The next prime is 1375411. The reversal of 1375407 is 7045731.

It is not a de Polignac number, because 1375407 - 2¹⁴ = 1359023 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1375417) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3057 + ... + 3477.

2^1375407 is an apocalyptic number.

1375407 is a deficient number, since it is larger than the sum of its proper divisors (869633).

1375407 is a wasteful number, since it uses less digits than its factorization.

1375407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452 (or 435 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 27.

The square root of 1375407 is about 1172.7774724985. Note that the first 3 decimals coincide. The cubic root of 1375407 is about 111.2099750812.

The spelling of 1375407 in words is "one million, three hundred seventy-five thousand, four hundred seven".