84749031 has 8 divisors (see below), whose sum is σ = 125554160. Its totient is φ = 56499336.

The previous prime is 84749023. The next prime is 84749039. The reversal of 84749031 is 13094748.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (84749023) and next prime (84749039).

It is not a de Polignac number, because 84749031 - 2³ = 84749023 is a prime.

It is a super-2 number, since 2×84749031² = 14364796510877922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84749039) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1569400 + ... + 1569453.

It is an arithmetic number, because the mean of its divisors is an integer number (15694270).

Almost surely, 2^84749031 is an apocalyptic number.

84749031 is a deficient number, since it is larger than the sum of its proper divisors (40805129).

84749031 is a wasteful number, since it uses less digits than its factorization.

84749031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3138862 (or 3138856 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 84749031 is about 9205.9236907548. The cubic root of 84749031 is about 439.2498080960.

The spelling of 84749031 in words is "eighty-four million, seven hundred forty-nine thousand, thirty-one".