85402449 has 12 divisors (see below), whose sum is σ = 134573712. Its totient is φ = 51759000.

The previous prime is 85402433. The next prime is 85402459. The reversal of 85402449 is 94420458.

It is not a de Polignac number, because 85402449 - 2⁴ = 85402433 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (85402409) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 431227 + ... + 431424.

It is an arithmetic number, because the mean of its divisors is an integer number (11214476).

Almost surely, 2^85402449 is an apocalyptic number.

It is an amenable number.

85402449 is a deficient number, since it is larger than the sum of its proper divisors (49171263).

85402449 is a wasteful number, since it uses less digits than its factorization.

85402449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 862668 (or 862665 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 85402449 is about 9241.3445450324. The cubic root of 85402449 is about 440.3757963717.

Subtracting 85402449 from its reverse (94420458), we obtain a square (9018009 = 3003²).

The spelling of 85402449 in words is "eighty-five million, four hundred two thousand, four hundred forty-nine".