76478403 has 4 divisors (see below), whose sum is σ = 101971208. Its totient is φ = 50985600.

The previous prime is 76478387. The next prime is 76478411. The reversal of 76478403 is 30487467.

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: 30487467 = 3 ⋅10162489.

It is not a de Polignac number, because 76478403 - 2⁴ = 76478387 is a prime.

It is a super-2 number, since 2×76478403² = 11697892250860818, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76478503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12746398 + ... + 12746403.

It is an arithmetic number, because the mean of its divisors is an integer number (25492802).

Almost surely, 2^76478403 is an apocalyptic number.

76478403 is a deficient number, since it is larger than the sum of its proper divisors (25492805).

76478403 is a wasteful number, since it uses less digits than its factorization.

76478403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25492804.

The product of its (nonzero) digits is 112896, while the sum is 39.

The square root of 76478403 is about 8745.1931368038. The cubic root of 76478403 is about 424.4692854174.

The spelling of 76478403 in words is "seventy-six million, four hundred seventy-eight thousand, four hundred three".