7902291 has 8 divisors (see below), whose sum is σ = 10670080. Its totient is φ = 5201352.

The previous prime is 7902287. The next prime is 7902329. The reversal of 7902291 is 1922097.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7902291 - 2² = 7902287 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7901291) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 16435 + ... + 16908.

It is an arithmetic number, because the mean of its divisors is an integer number (1333760).

Almost surely, 2^7902291 is an apocalyptic number.

7902291 is a deficient number, since it is larger than the sum of its proper divisors (2767789).

7902291 is a wasteful number, since it uses less digits than its factorization.

7902291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33425.

The product of its (nonzero) digits is 2268, while the sum is 30.

The square root of 7902291 is about 2811.1013855783. The cubic root of 7902291 is about 199.1824207080.

It can be divided in two parts, 790 and 2291, that added together give a triangular number (3081 = T₇₈).

The spelling of 7902291 in words is "seven million, nine hundred two thousand, two hundred ninety-one".