3091402 has 4 divisors (see below), whose sum is σ = 4637106. Its totient is φ = 1545700.

The previous prime is 3091397. The next prime is 3091409. The reversal of 3091402 is 2041903.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2041903 = 613 ⋅3331.

It can be written as a sum of positive squares in only one way, i.e., 2627641 + 463761 = 1621^2 + 681^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 3091402.

It is not an unprimeable number, because it can be changed into a prime (3091409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 772849 + ... + 772852.

Almost surely, 2^3091402 is an apocalyptic number.

3091402 is a deficient number, since it is larger than the sum of its proper divisors (1545704).

3091402 is a wasteful number, since it uses less digits than its factorization.

3091402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1545703.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 3091402 is about 1758.2383228675. The cubic root of 3091402 is about 145.6750450898.

It can be divided in two parts, 309 and 1402, that added together give a triangular number (1711 = T₅₈).

The spelling of 3091402 in words is "three million, ninety-one thousand, four hundred two".