78301949 has 12 divisors (see below), whose sum is σ = 90744288. Its totient is φ = 66993600.

The previous prime is 78301931. The next prime is 78301961. The reversal of 78301949 is 94910387.

It is a happy number.

It is not a de Polignac number, because 78301949 - 2⁸ = 78301693 is a prime.

It is a super-2 number, since 2×78301949² = 12262390434397202, 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 (78301919) 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, 9137 + ... + 15494.

It is an arithmetic number, because the mean of its divisors is an integer number (7562024).

Almost surely, 2^78301949 is an apocalyptic number.

It is an amenable number.

78301949 is a deficient number, since it is larger than the sum of its proper divisors (12442339).

78301949 is a wasteful number, since it uses less digits than its factorization.

78301949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24676 (or 24659 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 78301949 is about 8848.8388503803. The cubic root of 78301949 is about 427.8164937405.

It can be divided in two parts, 7830 and 1949, that added together give a palindrome (9779).

The spelling of 78301949 in words is "seventy-eight million, three hundred one thousand, nine hundred forty-nine".