7149998 has 8 divisors (see below), whose sum is σ = 10738992. Its totient is φ = 3570336.

The previous prime is 7149983. The next prime is 7150007. The reversal of 7149998 is 8999417.

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

It is a super-2 number, since 2×7149998² = 102244942800008, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 86 + ... + 3782.

It is an arithmetic number, because the mean of its divisors is an integer number (1342374).

Almost surely, 2^7149998 is an apocalyptic number.

7149998 is a deficient number, since it is larger than the sum of its proper divisors (3588994).

7149998 is a wasteful number, since it uses less digits than its factorization.

7149998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4666.

The product of its digits is 163296, while the sum is 47.

The square root of 7149998 is about 2673.9480174454. The cubic root of 7149998 is about 192.6498344324.

The spelling of 7149998 in words is "seven million, one hundred forty-nine thousand, nine hundred ninety-eight".