7399121 has 4 divisors (see below), whose sum is σ = 7417200. Its totient is φ = 7381044.

The previous prime is 7399103. The next prime is 7399153. The reversal of 7399121 is 1219937.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1219937 = 17 ⋅71761.

It is a cyclic number.

It is not a de Polignac number, because 7399121 - 2⁶ = 7399057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7399181) 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, 8411 + ... + 9248.

It is an arithmetic number, because the mean of its divisors is an integer number (1854300).

Almost surely, 2^7399121 is an apocalyptic number.

It is an amenable number.

7399121 is a deficient number, since it is larger than the sum of its proper divisors (18079).

7399121 is a wasteful number, since it uses less digits than its factorization.

7399121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18078.

The product of its digits is 3402, while the sum is 32.

The square root of 7399121 is about 2720.1325335358. The cubic root of 7399121 is about 194.8617999525.

The spelling of 7399121 in words is "seven million, three hundred ninety-nine thousand, one hundred twenty-one".