9091402 has 4 divisors (see below), whose sum is σ = 13637106. Its totient is φ = 4545700.

The previous prime is 9091391. The next prime is 9091429. The reversal of 9091402 is 2041909.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2041909 = 167 ⋅12227.

It can be written as a sum of positive squares in only one way, i.e., 9066121 + 25281 = 3011^2 + 159^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2272849 + ... + 2272852.

Almost surely, 2^9091402 is an apocalyptic number.

9091402 is a deficient number, since it is larger than the sum of its proper divisors (4545704).

9091402 is a wasteful number, since it uses less digits than its factorization.

9091402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4545703.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 9091402 is about 3015.1951843952. The cubic root of 9091402 is about 208.7101741945.

The spelling of 9091402 in words is "nine million, ninety-one thousand, four hundred two".