7890901 has 4 divisors (see below), whose sum is σ = 8083404. Its totient is φ = 7698400.

The previous prime is 7890881. The next prime is 7890913. The reversal of 7890901 is 1090987.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1090987 = 853 ⋅1279.

It can be written as a sum of positive squares in 2 ways, for example, as 2480625 + 5410276 = 1575^2 + 2326^2 .

It is a cyclic number.

It is not a de Polignac number, because 7890901 - 2¹³ = 7882709 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7890991) 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, 96190 + ... + 96271.

It is an arithmetic number, because the mean of its divisors is an integer number (2020851).

Almost surely, 2^7890901 is an apocalyptic number.

It is an amenable number.

7890901 is a deficient number, since it is larger than the sum of its proper divisors (192503).

7890901 is a wasteful number, since it uses less digits than its factorization.

7890901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192502.

The product of its (nonzero) digits is 4536, while the sum is 34.

The square root of 7890901 is about 2809.0747587061. The cubic root of 7890901 is about 199.0866772230.

The spelling of 7890901 in words is "seven million, eight hundred ninety thousand, nine hundred one".