7958402 has 4 divisors (see below), whose sum is σ = 11937606. Its totient is φ = 3979200.

The previous prime is 7958399. The next prime is 7958407. The reversal of 7958402 is 2048597.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2048597 = 1031 ⋅1987.

It can be written as a sum of positive squares in only one way, i.e., 7958041 + 361 = 2821^2 + 19^2 .

It is not an unprimeable number, because it can be changed into a prime (7958407) 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, 1989599 + ... + 1989602.

Almost surely, 2^7958402 is an apocalyptic number.

7958402 is a deficient number, since it is larger than the sum of its proper divisors (3979204).

7958402 is a wasteful number, since it uses less digits than its factorization.

7958402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3979203.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 7958402 is about 2821.0639836771. The cubic root of 7958402 is about 199.6527474272.

The spelling of 7958402 in words is "seven million, nine hundred fifty-eight thousand, four hundred two".