1377961 has 4 divisors (see below), whose sum is σ = 1483972. Its totient is φ = 1271952.

The previous prime is 1377931. The next prime is 1377967. The reversal of 1377961 is 1697731.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1697731 = 7 ⋅242533.

It can be written as a sum of positive squares in 2 ways, for example, as 337561 + 1040400 = 581^2 + 1020^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1377961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1377967) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52986 + ... + 53011.

It is an arithmetic number, because the mean of its divisors is an integer number (370993).

2^1377961 is an apocalyptic number.

It is an amenable number.

1377961 is a deficient number, since it is larger than the sum of its proper divisors (106011).

1377961 is a wasteful number, since it uses less digits than its factorization.

1377961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106010.

The product of its digits is 7938, while the sum is 34.

The square root of 1377961 is about 1173.8658356047. The cubic root of 1377961 is about 111.2787679674.

The spelling of 1377961 in words is "one million, three hundred seventy-seven thousand, nine hundred sixty-one".